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Updates: 

The latest version of the FIPS standard is called "Geopolitical Entities and Codes", published in 2010-04. It assigns codes to the newly created Ugandan districts.

Sorin Cosoveanu supplied some new links. There are news releases on the Parliament website with conflicting information about new districts. The first  (2008?-12-08) says, "Parliament is considering the creation of twenty new districts ... Zumbo, Amudat, Otuke, Lamwo, Kyegegwa, Buikwe, Buyende, and Maracha effective July 1, 2009.... Namayingo, Kiyunga, Kiryandongo, Ntoroko, Serere, Aleptong, Gomba, Kalungu, Buvuma, Butambala, Bulambuli, and Kyankwanzi effective July 1 2010." The problem with this list is that Maracha is already a district. In 2006, a district was formed by taking Maracha and Terego counties from Arua district. Its name was usually given as Maracha district or Maracha-Terego district. Schedule I of the Constitution calls it Nyadri district, but various sources make it clear that this refers to the same district. For example, this Daily Monitor  article says, "the people of Maracha County (the new Nyadri District) ...". It may be that the new Maracha district contemplated here will be split from Nyadri.

The second  item, undated, says, "Government has asked Parliament to approve the creation of six more new districts, which will become effective on July 1, 2010. The motion, which is an addition to an earlier request for the creation of 14 districts, will bring the total number of districts to 99.... The proposed new districts are Zombo, Amudat, Otuke, Lamwo, Kyegegwa, Buikwe and Buikwe, which will take effect on July 1, 2009. The new districts of Namayingo, Luuka, Kiryadongo, Ntoroko, Serere, Alebtong, Gomba, Kalungu, Buvuma, Butambala and Bulambuli will become effective on July 1, 2010." This creates more conflicts. In the first place, the content of the lists has changed somewhat. "Buikwe and Buikwe" has to be a mistake. Spelling changes (Zumbo to Zombo, Kiryandongo to Kiryadongo, Aleptong to Alebtong) are probably just variant names. The second district on the 2010 list has changed from Kiyunga to Luuka. The lists have both been truncated at the end. In the second place, the number of districts to be formed is eight in 2009 and twelve in 2010 (according to version 1; seven and eleven, respectively, in version 2, which is patently wrong). The wording at the start of this news item would seem to imply that fourteen districts were to be created in 2009 and six in 2010. This can be reconciled if we hypothesize that there was an earlier proposal to create eight districts in 2009 and six in 2010, to which the new proposal adds six more in 2010.

In fact, these were only plans; but they give us an idea of what to look for in the news. Source [16] says that Parliament approved the creation of seven new districts: Zombo (split from Nebbi), Amudat (split from Nakapiripirit), Otuke (split from Lira), Lamwo (split from Kitgum), Kyegegwa (split from Kyenjojo), Buikwe (split from Mukono), and Buyende (split from Kamuli). No action was taken on Maracha because of disagreement over whether Terego county should be included in Maracha or remain in Arua, according to the article; this contradicts information previously available that indicated that Maracha has already been formed. Finally, the article says, the session ended without deciding whether Namayingo should be split from Bugiri.

I have used Schedule I of the Uganda Constitution (source [15]) to resolve name conflicts, such as Busiki vs. Namutumba or Kibaale vs. Kibale. Note: sometimes a variant name is much more prevalent than the "official" one.

ISO 3166-2 Newsletter number II-1, dated 2010-02-03, has changes to the listing for Uganda. The prefix UG- is added explicitly to each province code. ISO codes are provided for the 3 districts created in 2007. The alternate names listed in Newsletter I-9 have been deleted.

In 2008, The Uganda Communication Commission set up a URL for each district, following the pattern www.district name.go.ug. Some, but not all, of them have been allowed to expire. Source [9] examines the reasons behind the rapid creation of new districts. It says that the creation of Lamwo district out of Kitgum was announced in 2007-07. It also says that Maracha and Tororo districts were not created when they were announced. Lamwo and Maracha didn't have UCC websites yet. Tororo's URL brought up a Joomla page.

ISO 3166-2 Newsletter Number I-9 was published on 2007-11-28. It provided ISO codes for the 21 districts created since Newsletter I-5 was issued in 2003. The 56 existing codes were left unchanged. The newsletter listed alternate names for four districts: Amuru (Kilak), Isingiro (Kabingo), Maracha (Maracha-Terego), and Namutumba (Busiki).

Comparing the Wikipedia  article to the list of districts I showed at that time, I found the following discrepancies: Bukedea (pop. 122,527) is split from Kumi, Bududa (pop. 124,368) from Manafwa, and Lyantonde (pop. 66,175) from Rakai. This was eventually confirmed from other sources. Also, on the Wikipedia page, the names of Busiki, Kabingo, and Maracha were given as Namutumba, Isingiro, and Maracha-Terego, respectively. My current list, based on the Constitution, calls them Namutumba, Isingiro, and Nyadri.

Lucas Snyder computed the populations of the newly created districts (2005-07-01 and 2006-07-01). In most cases, it was possible to calculate the populations by using the populations of the individual counties that were taken to make each new district. The exception is Budaka district, which included some sub-counties of Pallisa district. The total 2002 population for Budaka and Pallisa is known to be correct.

FIPS Publication Change Notice No. 9, affecting FIPS PUB 10-4, was issued on 2004-10-01. It assigned FIPS codes to the eleven new districts of 2000-2001. It also changed the FIPS codes of the old districts from which the new ones were formed. Details are below under Primary subdivisions and Change history.

ISO 3166-2 Newsletter number I-5, dated 2003-09-05, added eleven new districts to Uganda, and changed all ISO codes for districts. It cited the Uganda Bureau of Statistics (source [2]) as its source for the list of districts and the codes. All of the district names from the old list were still there, except that Kibale appeared as Kibaale in the newsletter (and also on the UBoS site).

Change Notice 7 to FIPS PUB 10-4, published 2002-01-10, assigned FIPS codes to the six new districts created in 1997. ISO 3166-2 Newsletter Number I-3, published 2002-08-20, assigned ISO codes to them.

Country overview: 

Short name	UGANDA
ISO code	UG
FIPS code	UG
Language	English (en)
Time zone	+3
Capital	Kampala

 

Uganda was a British protectorate at the beginning of the 20th century. On 1962-10-09 it became an independent member of the British Commonwealth.

Other names of country: 

1. Danish: Uganda
2. Dutch: Oeganda, Republiek Oeganda (formal)
3. English: Republic of Uganda (formal)
4. Finnish: Uganda
5. French: Ouganda m
6. German: Uganda n
7. Icelandic: Úganda
8. Italian: Uganda f
9. Norwegian: Uganda, Republikken Uganda (formal)
10. Portuguese: Uganda, República f do Uganda m (formal)
11. Spanish: Uganda, República f de Uganda (formal)
12. Swedish: Uganda

Origin of name: 

Swahili for land of the Ganda, ethnic name

Primary subdivisions: 

Uganda is divided into 80 districts.

District	HASC	ISO	FIPS	Population	Reg
Abim	UG.AI	317	UGB6	58,590	N
Adjumani	UG.AD	301	UG98	201,493	N
Amolatar	UG.AT	314	UGB7	96,374	N
Amuria	UG.AM	216	UGB8	183,817	E
Amuru	UG.KQ	319	UGB9	177,783	N
Apac	UG.AC	302	UG99	405,524	N
Arua	UG.AW	303	UGA1	413,113	N
Budaka	UG.BD	217	UGC1	* 221,525	E
Bududa	UG.BA	223	UGC2	124,368	E
Bugiri	UG.BG	201	UG66	426,522	E
Bukedea	UG.BE	224	UGC3	122,527	E
Bukwo	UG.BW	218	UGC4	49,826	E
Buliisa	UG.BL	419	UGC5	64,823	W
Bundibugyo	UG.BN	401	UG28	212,884	W
Bushenyi	UG.BS	402	UG29	723,427	W
Busia	UG.BU	202	UG67	228,181	E
Butaleja	UG.BJ	219	UGC6	160,927	E
Dokolo	UG.DO	318	UGC7	131,047	N
Gulu	UG.GL	304	UGA2	290,624	N
Hoima	UG.HO	403	UG31	349,204	W
Ibanda	UG.IB	416	UGC8	198,043	W
Iganga	UG.IN	203	UGA3	547,155	E
Isingiro	UG.NG	417	UGC9	318,913	W
Jinja	UG.JI	204	UG33	413,937	E
Kaabong	UG.AB	315	UGD1	379,775	N
Kabale	UG.KA	404	UG34	471,783	W
Kabarole	UG.BR	405	UG79	359,180	W
Kaberamaido	UG.KD	213	UG80	122,924	E
Kalangala	UG.KN	101	UG36	36,661	C
Kaliro	UG.RO	220	UGD2	153,513	E
Kampala	UG.KM	102	UG37	1,208,544	C
Kamuli	UG.KX	205	UGA4	558,566	E
Kamwenge	UG.KE	413	UG81	295,313	W
Kanungu	UG.UU	414	UG82	205,095	W
Kapchorwa	UG.KP	206	UGA5	143,684	E
Kasese	UG.KS	406	UG40	532,993	W
Katakwi	UG.KK	207	UGA6	123,215	E
Kayunga	UG.KY	112	UG83	297,081	C
Kibaale	UG.KI	407	UG41	413,353	W
Kiboga	UG.KG	103	UG42	231,718	C
Kiruhuura	UG.KH	418	UGD3	212,087	W
Kisoro	UG.KR	408	UG43	219,427	W
Kitgum	UG.TG	305	UG84	286,122	N
Koboko	UG.OK	316	UGD4	131,604	N
Kotido	UG.KF	306	UGA7	157,765	N
Kumi	UG.KV	208	UG46	265,488	E
Kyenjojo	UG.KJ	415	UG85	380,362	W
Lira	UG.LA	307	UGA8	530,342	N
Luwero	UG.LW	104	UGA9	336,616	C
Lyantonde	UG.LY	116	UGD5	66,175	C
Manafwa	UG.MW	221	UGD6	264,383	E
Masaka	UG.MA	105	UG71	767,759	C
Masindi	UG.MC	409	UG50	405,042	W
Mayuge	UG.MG	214	UG86	326,567	E
Mbale	UG.ME	209	UGB1	332,174	E
Mbarara	UG.RR	410	UGB2	360,008	W
Mityana	UG.TY	114	UGD8	269,763	C
Moroto	UG.MT	308	UG88	170,506	N
Moyo	UG.MY	309	UGB3	199,912	N
Mpigi	UG.MI	106	UG89	414,757	C
Mubende	UG.MD	107	UGB4	436,493	C
Mukono	UG.MN	108	UG90	807,923	C
Nakapiripirit	UG.NP	311	UG91	153,862	N
Nakaseke	UG.NK	115	UGD9	138,011	C
Nakasongola	UG.NA	109	UG73	125,297	C
Namutumba	UG.BK	222	UGE1	169,156	E
Nebbi	UG.NE	310	UG58	433,466	N
Ntungamo	UG.NT	411	UG59	386,816	W
Nyadri	UG.MH	320	UGD7	310,338	N
Oyam	UG.OY	321	UGE2	270,720	N
Pader	UG.PD	312	UG92	293,679	N
Pallisa	UG.PL	210	UGB5	* 300,729	E
Rakai	UG.RI	110	UG61	405,631	C
Rukungiri	UG.RK	412	UG93	308,696	W
Sembabule	UG.SE	111	UG74	184,178	C
Sironko	UG.SI	215	UG94	291,906	E
Soroti	UG.SR	211	UG95	371,986	E
Tororo	UG.TR	212	UG76	398,601	E
Wakiso	UG.WA	113	UG96	957,280	C
Yumbe	UG.YU	313	UG97	253,325	N
80 districts				24,748,977
HASC: Hierarchical administrative subdivision codes. ISO: Codes from ISO 3166-2. FIPS: "Geopolitical Entities and Codes." Population: 2002-09-13 census (calculated, *estimated) Reg: ISO code for region the district belongs to: C = Central, E = Eastern, N = Northern, W = Western. Capitals: Have the same name as the district, except for Kilak in Amuru, Fort Portal in Kabarole, and the dual capitals Mawogola and Lwemiyaga in Sembabule.

Further subdivisions:

See the Counties of Uganda page.

The districts are divided into counties, which are subdivided into sub-counties, which are subdivided into parishes, which are subdivided into villages. The old regions are still referred to, but no longer have any administrative status.

Territorial extent: 

1. Bugiri includes the islands of Sigulu, Lolui, Dagusi, Sagitu, and others in Lake Victoria.
2. Kalangala consists of the Sese Islands in Lake Victoria. The largest ones are Bugala and Bukasa.
3. Mukono includes the islands of Buvuma, Kome, Damba, Bugaia, and others in Lake Victoria.

Change history: 

1. The sources for the entries below include sources [4] and [5].
2. 1926: Significant border adjustments made between Uganda and its neighboring countries.
3. From 1945 or earlier until after independence, Uganda was divided into four provinces. During at least part of this period, the provinces were subdivided into districts. This table gives the populations of the provinces according to the censuses of 1948, 1959, and 1969.

Province	1948	1959	1969	Area(km.²)	Capital
Buganda	1,317,705	1,881,149	2,667,332	61,609	Kampala
Eastern	1,514,428	1,902,697	2,817,066	63,018	Jinja
Northern	945,104	1,249,310	1,631,899	57,320	Gulu
Western	1,177,939	1,503,375	2,432,550	54,913	Masindi
4 provinces	4,955,176	6,536,531	9,548,847	236,860

1. 1959: Status of provinces changed to regions, with no administrative function. Districts became the primary divisions. (This is a conjecture to try to explain the observed facts. According to [5], there were 16 districts at this time.)
2. 1962: Mbale territory, with an area of 25 km.², was created from territory disputed between Bugisu and Bukedi districts. The city of Mbale was the capital of both districts. (GE-29) The New Vision site gives 1966 as the date of this change. [5] agrees with 1962.
3. 1962-10-09: Uganda became an independent member of the British Commonwealth.
4. 1966-05-28: Status of Busoga changed from territory to district. (GE-29)
5. 1966-06-10: Buganda kingdom split into four districts: Bombo, Masaka, Mpigi, and Mubende. At this date, Uganda was divided into 15 districts, three kingdoms, and one territory, as listed in the following table. These were further subdivided into sazas (counties), which were subdivided into gombolas (sub-counties), which were subdivided into mirukas (parishes). (GE-29)

Division	Type	Capital
Acholi	d	Gulu
Ankole	k	Mbarara
Bombo	d	Bombo
Bugisu	d	Mbale
Bukedi	d	Mbale
Bunyoro	k	Hoima
Busoga	d	Jinja
Karamoja	d	Moroto
Kigezi	d	Kabale
Lango	d	Lira
Madi	d	Moyo
Masaka	d	Masaka
Mbale	t	Mbale
Mpigi	d	Mpigi
Mubende	d	Mubende
Sebei	d	Kapchorwa
Teso	d	Soroti
Toro	k	Fort Portal
West Nile	d	Arua
Type: district (d), kingdom (k), or territory (t).

 

Source [6] has a table of districts with populations from the 1959 census. This list differs from the previous one in that Bombo, Mpigi, and Sebei disappear, to be replaced by Mengo. I'm not sure how to reconcile this with the information from the Geographic Notes. Based on the change reported in GE-40, Mengo represents the union of Bombo and Mpigi, but I don't know what happened to Sebei.

District	Population
Acholi	286,846
Ankole	531,335
Bugisu	353,411
Bukedi	400,432
Bunyoro	128,198
Busoga	677,410
Karamoja	172,397
Kigezi	494,488
Lango	354,311
Madi	50,737
Masaka	443,877
Mbale Town	13,569
Mengo	1,337,895
Mubende	99,377
Teso	457,875
Toro	349,354
West Nile	385,019
17 districts	6,536,531
Population: 1959 census. Population of Karamoja includes Karasuk, which is part of Kenya.

1. 1967-09-08: New constitution approved. Status of kingdoms changed to districts. Mbale territory merged with Bugisu district. Capital of Bukedi moved to Tororo. Name of Bombo district changed to East Mengo. Name of Mpigi district changed to West Mengo. (GE-40)
2. 1971-04: Acholi district split into East Acholi and West Acholi; Karamoja district split into North Karamoja and South Karamoja. Source [7] has this list of divisions of Uganda. As you can see, it reflects the partition of Acholi but not that of Karamoja.

District	FIPS	Population	Area(km.²)	Reg	Capital
East Acholi	UG06	463,844	27,853	N	Gulu
West Acholi	UG17			N
Ankole	UG01	861,145	16,182	W	Mbarara
Bugisu	UG02	421,433	2,546	E	Mbale
Bukedi	UG03	527,090	4,553	E	Tororo
Bunyoro	UG04	351,903	19,609	W	Hoima
Busoga	UG05	949,384	14,047	E	Jinja
East Mengo	UG07	851,583	23,440	B	Bombo
Karamoja	UG08	284,067	27,213	E	Moroto
Kigezi	UG09	647,988	5,218	W	Kabale
Lango	UG10	504,315	13,740	N	Lira
Madi	UG11	89,978	5,006	N	Moyo
Masaka	UG12	640,596	21,300	B	Masaka
Mubende	UG13	330,955	10,310	B	Mubende
Sebei	UG14	64,464	1,738	E	Kapchorwa
Teso	UG15	570,628	12,921	E	Soroti
Toro	UG16	571,514	13,904	W	Fort Portal
West Mengo	UG18	844,198	6,559	B	Mpigi
West Nile	UG19	573,762	10,721	N	Arua
19 districts		9,548,847	236,860
FIPS: Codes from the Defense Intelligence Agency. Population: 1969 census. Reg: Region to which the district belonged: Buganda (B), Eastern (E), Northern (N), or Western (W).

1. 1974: Provinces were introduced as the new primary subdivisions of Uganda. Districts remained as secondary subdivisions, and were increased in number to 37 ([5]). These were the provinces during this period.

Province	FIPS	Population	Area(km.²)	Capital	Former
Busoga	UG05	1,221,872	13,340	Jinja	Busoga
Central	UG18	1,117,648	6,270	Kampala	West Mengo
Eastern	UG20	2,015,530	22,260	Mbale	Bugisu, Bukedi, Sebei, Teso
Karamoja	UG08	350,908	26,960	Moroto	Karamoja (North and South)
Nile	UG21	811,755	15,730	Arua	Madi, West Acholi (part), West Nile
North Buganda	UG22	1,554,371	27,010	Bombo	East Mengo, Mubende
Northern	UG23	1,261,364	41,520	Gulu	Acholi (East and part of West), Lango
South Buganda	UG12	905,754	15,970	Masaka	Masaka
Southern	UG24	1,963,428	21,280	Mbarara	Ankole, Kigezi
Western	UG25	1,427,446	30,980	Fort Portal	Bunyoro, Toro
10 provinces		12,630,076	221,320
FIPS: Codes from FIPS PUB 10-4. Population: 1980 census Former: Pre-1974 districts forming this province.

1. 1979: Provinces abolished, and the number of districts reduced to 33, each named for its capital.
2. ~1989: Name of Buganda region changed to Central.
3. 1990: Kalangala district split from Masaka.
4. 1991: Kibaale district split from Hoima, while 314 km.² of territory was transferred from Masindi to Hoima; Kiboga split from Mubende; Kisoro split from Kabale; Pallisa split from Tororo. The resulting districts were these:

District	HASC	ISO	FIPS	Population	Area(km.²)	Area(mi.²)	Reg	Former
Apac	UG.AP	APA	UG26	460,700	6,488	2,505	N	Northern
Arua	UG.AR	ARU	UG27	624,600	7,830	3,023	N	Nile
Bundibugyo	UG.BN	BUN	UG28	116,000	2,338	903	W	Western
Bushenyi	UG.BS	BUS	UG29	734,800	5,396	2,083	W	Southern
Gulu	UG.GU	GUL	UG30	338,700	11,735	4,531	N	Nile, Northern
Hoima	UG.HO	HOI	UG31	197,800	5,492	2,120	W	Western
Iganga	UG.IG	IGA	UG32	944,000	13,113	5,063	E	Busoga
Jinja	UG.JI	JIN	UG33	284,900	734	283	E	Busoga
Kabale	UG.KA	KBL	UG34	412,800	1,827	705	W	Southern
Kabarole	UG.KB	KBR	UG35	741,400	8,361	3,228	W	Western
Kalangala	UG.KN	KLG	UG36	16,400	5,716	2,207	C	South Buganda
Kampala	UG.KM	KLA	UG37	773,500	238	92	C	Central
Kamuli	UG.KL	KLI	UG38	480,700	4,348	1,679	E	Busoga
Kapchorwa	UG.KC	KAP	UG39	116,300	1,738	671	E	Eastern
Kasese	UG.KS	KAS	UG40	343,000	3,205	1,237	W	Western
Kibaale	UG.KI	KLE	UG41	219,300	4,718	1,822	W	Western
Kiboga	UG.KG	KIB	UG42	140,800	3,774	1,457	C	North Buganda
Kisoro	UG.KR	KIS	UG43	184,900	662	256	W	Southern
Kitgum	UG.KT	KIT	UG44	350,300	16,136	6,230	N	Northern
Kotido	UG.KO	KOT	UG45	190,700	13,208	5,100	N	Karamoja
Kumi	UG.KU	KUM	UG46	237,000	2,861	1,105	E	Eastern
Lira	UG.LI	LIR	UG47	498,300	7,251	2,800	N	Northern
Luwero	UG.LU	LUW	UG48	449,200	9,198	3,551	C	North Buganda
Masaka	UG.MA	MSK	UG49	831,300	10,611	4,097	C	South Buganda
Masindi	UG.MS	MSI	UG50	253,500	9,326	3,601	W	Western
Mbale	UG.ML	MBL	UG51	706,600	2,546	983	E	Eastern
Mbarara	UG.MR	MBR	UG52	929,600	10,839	4,185	W	Southern
Moroto	UG.MO	MOR	UG53	171,500	14,113	5,449	N	Karamoja
Moyo	UG.MY	MOY	UG54	178,500	5,006	1,933	N	Nile
Mpigi	UG.MP	MPI	UG55	915,400	6,222	2,402	C	Central
Mubende	UG.MU	MUB	UG56	497,500	6,536	2,524	C	North Buganda
Mukono	UG.MK	MUK	UG57	816,200	14,242	5,499	C	North Buganda
Nebbi	UG.NE	NEB	UG58	315,900	2,891	1,116	N	Nile
Pallisa	UG.PA	PAL	UG60	356,000	1,919	741	E	Eastern
Rakai	UG.RA	RAK	UG61	382,000	4,973	1,920	C	South Buganda
Rukungiri	UG.RU	RUK	UG62	388,000	2,753	1,063	W	Southern
Soroti	UG.SO	SOR	UG63	430,900	10,060	3,884	E	Eastern
Tororo	UG.TO	TOR	UG64	554,000	2,634	1,017	E	Eastern
38 districts				16,583,000	241,038	93,065
HASC: Hierarchical administrative subdivision codes. ISO: Codes from ISO 3166-2. FIPS: Codes from FIPS PUB 10-4. Population: 1991-01-12 census (preliminary?) Reg: Region (C = Central, E = Eastern, N = Northern, W = Western) Capitals: Capitals have the same names as their districts, except Kabarole (capital Fort Portal). Former: Pre-1990 province from which the district was formed.

1. 1994: Ntungamo district formed by taking parts of Bushenyi and Mbarara.
2. 1997-03-20: Adjumani district split from Moyo (former FIPS code UG54); Bugiri split from Iganga (UG32); Busia split from Tororo (UG64); Katakwi split from Soroti (UG63); Nakasongola split from Luwero (UG48); Sembabule split from Masaka (UG49). The following table shows the resulting situation. (Source [1].)

District	HASC	ISO	FIPS	Population	Area(km.²)	Area(mi.²)	Reg
Adjumani	UG.AD	ADJ	UG65	96,264	2,888	1,115	N
Apac	UG.AP	APA	UG26	454,504	5,887	2,273	N
Arua	UG.AR	ARU	UG27	637,941	7,595	2,932	N
Bugiri	UG.BG	BUG	UG66	239,307	1,453	561	E
Bundibugyo	UG.BN	BUN	UG28	116,566	2,097	810	W
Bushenyi	UG.BS	BUS	UG29	579,137	3,827	1,478	W
Busia	UG.BU	BUA	UG67	163,597	705	272	E
Gulu	UG.GU	GUL	UG30	338,427	11,560	4,463	N
Hoima	UG.HO	HOI	UG31	197,851	3,563	1,376	W
Iganga	UG.IG	IGA	UG68	706,476	3,370	1,301	E
Jinja	UG.JI	JIN	UG33	289,476	677	261	E
Kabale	UG.KA	KBL	UG34	417,218	1,695	654	W
Kabarole	UG.KB	KBR	UG35	746,800	8,109	3,131	W
Kalangala	UG.KN	KLG	UG36	16,371	432	167	C
Kampala	UG.KM	KLA	UG37	774,241	169	65	C
Kamuli	UG.KL	KLI	UG38	485,214	3,332	1,286	E
Kapchorwa	UG.KC	KAP	UG39	116,702	1,738	671	E
Kasese	UG.KS	KAS	UG40	343,601	2,724	1,052	W
Katakwi	UG.KW	KAT	UG69	144,597	4,647	1,794	E
Kibaale	UG.KI	KLE	UG41	220,261	4,208	1,625	W
Kiboga	UG.KG	KIB	UG42	141,607	3,872	1,495	C
Kisoro	UG.KR	KIS	UG43	186,681	620	239	W
Kitgum	UG.KT	KIT	UG44	357,184	16,136	6,230	N
Kotido	UG.KO	KOT	UG45	196,006	13,208	5,100	N
Kumi	UG.KU	KUM	UG46	236,694	2,457	949	E
Lira	UG.LI	LIR	UG47	500,965	6,151	2,375	N
Luwero	UG.LU	LUW	UG70	349,194	5,360	2,070	C
Masaka	UG.MA	MSK	UG71	694,697	3,214	1,241	C
Masindi	UG.MS	MSI	UG50	260,796	8,458	3,266	W
Mbale	UG.ML	MBL	UG51	710,980	2,504	967	E
Mbarara	UG.MR	MBR	UG52	798,774	9,733	3,758	W
Moroto	UG.MO	MOR	UG53	174,417	14,113	5,449	N
Moyo	UG.MY	MOY	UG72	79,381	1,780	687	N
Mpigi	UG.MP	MPI	UG55	913,867	4,514	1,743	C
Mubende	UG.MU	MUB	UG56	500,976	5,949	2,297	C
Mukono	UG.MK	MUK	UG57	824,604	4,594	1,774	C
Nakasongola	UG.NA	NAK	UG73	100,497	3,179	1,227	C
Nebbi	UG.NE	NEB	UG58	316,866	2,781	1,074	N
Ntungamo	UG.NT	NTU	UG59	289,222	1,981	765	W
Pallisa	UG.PA	PAL	UG60	357,656	1,564	604	E
Rakai	UG.RA	RAK	UG61	383,501	2,317	895	C
Rukungiri	UG.RU	RUK	UG62	390,780	2,584	998	W
Sembabule	UG.SE	SEM	UG74	144,039	3,889	1,502	C
Soroti	UG.SO	SOR	UG75	285,793	3,879	1,498	E
Tororo	UG.TO	TOR	UG76	391,977	1,631	630	E
45 districts				16,671,705	236,036	91,134
HASC: Hierarchical administrative subdivision codes. ISO: Codes from ISO 3166-2. FIPS: Codes from FIPS PUB 10-4. Population: 1991-01-12 census. Area: Land area only, except that the totals include water area. Reg: Region to which the district belongs: C = Central, E = Eastern, N = Northern, W = Western. Capitals: Capitals have the same name as their districts, except Kabarole (capital Fort Portal) and Sembabule (capitals Mawogola and Lwemiyaga).

1. 2000-11-28: The Uganda Parliament passed a motion to create 11 new districts: Kamwenge, Kayunga, Kyenjojo, Mayuge, Pader, Sironko, Wakiso, and Yumbe, retroactive to 2000-07-01; and Kaberamaido, Kanungu, and Nakapiripirit, effective 2001-07-01. Kamwenge district split from Kabarole; Kayunga split from Mukono; Kyenjojo split from Kabarole; Mayuge split from Iganga; Pader split from Kitgum; Sironko split from Mbale; Wakiso split from Mpigi; Yumbe split from Arua.
2. 2001-07-01: Kaberamaido district split from Soroti; Kanungu split from Rukungiri; Nakapiripirit split from Moroto. The following table shows the districts at that date. (Source [3].)

District	HASC	ISO	FIPS	Pop-2002	Pop-1991	Pop-1980
Adjumani	UG.AD	301	UG65	201,493	96,264	48,789
Apac	UG.AP	302	UG26	676,244	454,504	313,333
Arua	UG.AA	303	UG77	855,055	538,147	394,303
Bugiri	UG.BG	201	UG66	426,522	239,307	155,513
Bundibugyo	UG.BN	401	UG28	212,884	116,566	112,216
Bushenyi	UG.BS	402	UG29	723,427	579,137	408,663
Busia	UG.BU	202	UG67	228,181	163,597	126,184
Gulu	UG.GU	304	UG30	468,407	338,427	270,085
Hoima	UG.HO	403	UG31	349,204	197,851	142,247
Iganga	UG.IA	203	UG78	716,311	489,627	360,312
Jinja	UG.JI	204	UG33	413,937	289,476	228,520
Kabale	UG.KA	404	UG34	471,783	417,218	328,757
Kabarole	UG.BR	405	UG79	359,180	299,573	224,638
Kaberamaido	UG.KD	213	UG80	122,924	81,535	79,344
Kalangala	UG.KN	101	UG36	36,661	16,371	8,575
Kampala	UG.KM	102	UG37	1,208,544	774,241	458,503
Kamuli	UG.KL	205	UG38	712,079	485,214	349,549
Kamwenge	UG.KE	413	UG81	295,313	201,654	129,022
Kanungu	UG.UU	414	UG82	205,095	160,708	118,658
Kapchorwa	UG.KC	206	UG39	193,510	116,702	73,967
Kasese	UG.KS	406	UG40	532,993	343,601	277,697
Katakwi	UG.KW	207	UG69	307,032	144,597	177,447
Kayunga	UG.KY	112	UG83	297,081	236,177	194,793
Kibaale	UG.KI	407	UG41	413,353	220,261	152,054
Kiboga	UG.KG	103	UG42	231,718	141,607	138,676
Kisoro	UG.KR	408	UG43	219,427	186,681	126,664
Kitgum	UG.TG	305	UG84	286,122	175,587	145,821
Kotido	UG.KO	306	UG45	596,130	196,006	161,445
Kumi	UG.KU	208	UG46	388,015	236,694	239,539
Kyenjojo	UG.KJ	415	UG85	380,362	245,573	166,161
Lira	UG.LI	307	UG47	757,763	500,965	370,252
Luwero	UG.LU	104	UG70	474,627	349,194	338,508
Masaka	UG.MA	105	UG71	767,759	694,697	520,312
Masindi	UG.MS	409	UG50	469,865	260,796	223,230
Mayuge	UG.MG	214	UG86	326,567	216,849	128,056
Mbale	UG.MB	209	UG87	720,925	498,675	372,169
Mbarara	UG.MR	410	UG52	1,089,051	782,797	590,998
Moroto	UG.MT	308	UG88	170,506	96,833	95,863
Moyo	UG.MY	309	UG72	199,912	79,381	57,703
Mpigi	UG.MI	106	UG89	414,757	350,980	271,775
Mubende	UG.MU	107	UG56	706,256	500,976	371,584
Mukono	UG.MN	108	UG90	807,923	588,427	439,482
Nakapiripirit	UG.NP	311	UG91	153,862	77,584	92,778
Nakasongola	UG.NA	109	UG73	125,297	100,497	73,966
Nebbi	UG.NE	310	UG58	433,466	316,866	233,000
Ntungamo	UG.NT	411	UG59	386,816	305,199	213,161
Pader	UG.PD	312	UG92	293,679	181,597	162,890
Pallisa	UG.PA	210	UG60	522,254	357,656	261,183
Rakai	UG.RA	110	UG61	471,806	383,501	274,558
Rukungiri	UG.RK	412	UG93	308,696	230,072	177,901
Sembabule	UG.SE	111	UG74	184,178	144,039	102,269
Sironko	UG.SI	215	UG94	291,906	212,305	184,772
Soroti	UG.SR	211	UG95	371,986	204,258	219,838
Tororo	UG.TO	212	UG76	559,528	391,977	281,043
Wakiso	UG.WA	113	UG96	957,280	562,887	389,433
Yumbe	UG.YU	313	UG97	253,325	99,794	77,980
56 districts				24,748,977	16,671,705	12,636,179
HASC: Hierarchical administrative subdivision codes. ISO: Codes from ISO 3166-2. Pop-2002: 2002-09-13 census. Pop-1991: 1991-01-12 census, adjusted for new districts. Pop-1980: 1980-01-18 census, adjusted for new districts.

 

Note: The first digit of a district's ISO code can also be used to find its region: 1 = Central, 2 = Eastern, 3 = Northern, 4 = Western. The ISO codes are also used by the Uganda Bureau of Statistics for coding census data, except for one transposition: according to source [17], the UBOS codes for Pader, Yumbe, and Nakapiripirit are 311, 312, and 313, respectively. Their ISO codes are 312, 313, and 311, respectively. The ISO codes were intended to match the census codes, so there's a mistake somewhere.

1. 2005-07-01: Fourteen new districts created. According to source [14], Amolatar district was created by taking Kyoga county from Lira; Amuria district created by taking Amuria and Kapelebyong counties from Katakwi; Budaka district created by taking Budaka county and Kakoro, Kabwangasi, Kirika and Kadama sub-counties from Pallisa; Bukwo district created by taking Kongasis county from Kapchorwa; Butaleja district created by taking Bunyole county from Tororo; Ibanda district created by taking Ibanda county from Mbarara; Kaabong district created by taking Dodoth county from Kotido; Isingiro district created by taking Kabingo and Bukanga counties from Mbarara; Kaliro district created by taking Bulamogi county from Kamuli; Kiruhuura district created by taking Kazo and Nyabushozi counties from Mbarara; Koboko district created by taking Koboko county from Arua; Manafwa district created by taking Bubulo and Manjiya counties from Mbale; Mityana district created by taking Mityana and Busujju counties from Mubende; and Nakaseke district created by taking Nakaseke county from Luwero. There is, however, an unresolved discrepancy with source [10]. That list substitutes Isingiro district for Budaka and Kabingo. Source [11] says that Budaka and Tororo were to be reconsidered because of boundary disputes. It lists Mityana among the districts to be formed in 2006; and it lists Amuria as being created in both 2005 and 2006. Source [12] has more details.
2. 2006-07-01: Seven new districts created. According to source [14], Abim district was created by taking Labwor county from Kotido (former HASC code UG.KZ); Buliisa district created by taking Buliisa county from Masindi; Namutumba district created by taking Busiki county from Iganga; Dokolo district created by taking Dokolo county from Lira (UG.LR); Amuru district created by taking Kilak and Nwoya counties from Gulu; Nyadri district created by taking Maracha and Terego counties from Arua (UG.AU); Oyam district created by taking Oyam county from Apac. The original plan included a new district to be created by taking Tororo county from Tororo, but this was deferred. Amuru district was probably called Kilak for a while.
3. 2007-07-01: Three new districts created by act of Parliament, passed 2006-07-13 (source [8]). Bukedea district created by taking Bukedea county from Kumi (former HASC code UG.KU); Bududa district created by taking Manjiya county from Manafwa (UG.MF); Lyantonde district created by taking Kabula county from Rakai (UG.RA). Cf. source [13].

Other names of subdivisions: 

1. Amuru: Kilak (variant)
2. Bukwo: Bukwa (variant)
3. Buliisa: Bulisa (variant)
4. Namutumba: Busiki (variant)
5. East Mengo: East Buganda (variant)
6. Isingiro: Kabingo (variant)
7. Kibaale: Kibale (variant)
8. Kiruhuura: Kiruhura (variant)
9. Luwero: Luweero (variant)
10. Manafwa: Bubuulo, Manafa (variant)
11. Nyadri: Maracha-Terego, Maracha (variant)
12. Sembabule: Ssembabule (variant)
13. West Mengo: West Buganda (variant)

Sources: 

1. [1] 1991 census data from Uganda Bureau of Statistics  (retrieved 2001-06-20).
2. [2] 2002 preliminary census data from http://www.ubos.org/2002censuspreliminarytable.pdf (now a dead link, retrieved 2003-09-13).
3. [3] 1980 and 1991 populations from http://www.ubos.org/appendix1.pdf, Provisional Summary tables in Appendix 1 of Uganda's 2002 census (dead link, retrieved 2004-01-22). Populations adjusted to reflect the geography as of 2001.
4. [4] Geographic Note GE-29 and Geographic Note GE-40. Office of the Geographer, U.S. State Department.
5. [5] "Report of the Commission of Inquiry into the Local Government System" (RCI). Government of Uganda, 1987.
6. [6] Atlas of Uganda. 1967.
7. [7] "Geopolitical Data Elements and Related Features". (U.S.) Defense Intelligence Agency, 1972-09-29.
8. [8] Ugandan Hansard  (retrieved 2010-02-20).
9. [9] Green, Elliott, "District Creation and Decentralisation in Uganda ". Crisis States Research Centre, Development Studies Institute, London School of Economics and Political Science, London, 2008-01.
10. [10] Uganda electoral commission page at http://ec.or.ug/vpd.pdf (dead link, retrieved 2006-03-07) had a list of districts as of 2006-02-15.
11. [11] The (Uganda) Weekly Observer, article dated 2005-08-04.
12. [12] Press review (July 13-30, 2005)  from the Ministry of Tourism, Trade and Industry (retrieved 2006-07-31).
13. [13] The Ministry of Local Government website, at http://www.molg.go.ug/LGlist.htm, said that Bududa and Bukedea were "not yet approved" (dead link, retrieved 2007-05-19).
14. [14] New Vision  (dated 2005-08-08, retrieved 2006-03-07) has a discussion of issues in district creation, and a timeline that appears to be partly copied from the Statoids site.
15. [15] The Uganda Parliament website has a simplified abridgement of the Constitution  as of 2006-02-15. On pp. 71-73 (following the page numbering in the document) there is a schedule listing 80 districts (retrieved 2010-02-21).
16. [16] Allafrica.com  has an article dated 2009-12-16 describing parliamentary action on new districts (retrieved 2010-02-21). The same site has a recapitulation of the 2009 session of Parliament , stating the same conclusions.
17. [17] 2002 Uganda Census Code List  (retrieved 2010-05-15).