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Updates: 

Area codes: Puerto Rico's international dialing prefix was originally +1, with area code 787. Area code 939 was added as an overlay on 2001-08-01.

Erratum: In "Administrative Subdivisions of Countries", Canovanas is spelled without an accent. It should have an acute accent on the 'o'.

Country overview: 

Short name	PUERTO RICO
ISO code	PR
FIPS code	RQ
Language	Spanish (es), English (en)
Time zone	-4
Capital	San Juan

 

The United States acquired Puerto Rico from Spain in the Spanish-American War (1898), calling it Porto Rico. Its name was changed back to Puerto Rico on 1932-05-17. It became a commonwealth in free association with the United States on 1952-07-25.

Other names of country: 

1. Danish: Puerto Rico
2. Dutch: Puerto Rico
3. English: Commonwealth of Puerto Rico (formal), Porto Rico (obsolete)
4. French: Porto Rico
5. German: Puerto Rico
6. Icelandic: Púertó Ríkó
7. Italian: Portorico
8. Portuguese: Porto m Rico
9. Russian: Содружество Пуэрто-Рико (formal)
10. Spanish: Puerto Rico, Estado m Libre Asociado de Puerto m Rico (formal)
11. Swedish: Puerto Rico
12. Turkish: Porto Riko

Origin of name: 

Spanish puerto: port, rico: rich

Primary subdivisions: 

Puerto Rico is divided into 78 municipalities.

Municipality	HASC	F-6	Population	Area(km.²)	Area(mi.²)
Adjuntas	PR.AJ	001	19,143	173	67
Aguada	PR.AD	003	42,042	78	30
Aguadilla	PR.AL	005	64,685	94	36
Aguas Buenas	PR.AB	007	29,032	78	30
Aibonito	PR.AI	009	26,493	80	31
Añasco	PR.AN	011	28,348	104	40
Arecibo	PR.AC	013	100,131	329	127
Arroyo	PR.AR	015	19,117	39	15
Barceloneta	PR.BC	017	22,322	62	24
Barranquitas	PR.BQ	019	28,909	88	34
Bayamón	PR.BY	021	224,044	115	44
Cabo Rojo	PR.CR	023	46,911	185	71
Caguas	PR.CG	025	140,502	152	59
Camuy	PR.CA	027	35,244	121	47
Canóvanas	PR.CV	029	43,335	76	29
Carolina	PR.CN	031	186,076	120	46
Cataño	PR.CT	033	30,071	14	5
Cayey	PR.CY	035	47,370	131	51
Ceiba	PR.CB	037	18,004	70	27
Ciales	PR.CL	039	19,811	172	66
Cidra	PR.CD	041	42,753	93	36
Coamo	PR.CO	043	37,597	202	78
Comerío	PR.CM	045	20,002	73	28
Corozal	PR.CZ	047	36,867	110	42
Culebra	PR.CU	049	1,868	28	11
Dorado	PR.DO	051	34,017	60	23
Fajardo	PR.FJ	053	40,712	80	31
Florida	PR.FL	054	12,367	26	10
Guánica	PR.GC	055	21,888	93	36
Guayama	PR.GM	057	44,301	170	66
Guayanilla	PR.GL	059	23,072	109	42
Guaynabo	PR.GB	061	100,053	70	27
Gurabo	PR.GR	063	36,743	73	28
Hatillo	PR.HA	065	38,925	109	42
Hormigueros	PR.HO	067	16,614	28	11
Humacao	PR.HU	069	59,035	117	45
Isabela	PR.IS	071	44,444	145	56
Jayuya	PR.JY	073	17,318	104	40
Juana Díaz	PR.JD	075	50,531	158	61
Juncos	PR.JC	077	36,452	68	26
Lajas	PR.LJ	079	26,261	157	61
Lares	PR.LR	081	34,415	161	62
Las Marías	PR.LM	083	11,061	119	46
Las Piedras	PR.LP	085	34,485	86	33
Loíza	PR.LZ	087	32,537	62	24
Luquillo	PR.LQ	089	19,817	67	26
Manatí	PR.MT	091	45,409	118	46
Maricao	PR.MR	093	6,449	96	37
Maunabo	PR.MB	095	12,741	54	21
Mayagüez	PR.MG	097	98,434	198	76
Moca	PR.MC	099	39,697	130	50
Morovis	PR.MV	101	29,965	101	39
Naguabo	PR.NG	103	23,753	136	53
Naranjito	PR.NR	105	29,709	73	28
Orocovis	PR.OR	107	23,844	164	63
Patillas	PR.PT	109	20,152	123	47
Peñuelas	PR.PN	111	26,719	116	45
Ponce	PR.PO	113	186,475	301	116
Quebradillas	PR.QB	115	25,450	60	23
Rincón	PR.RC	117	14,767	36	14
Río Grande	PR.RG	119	52,362	159	61
Sabana Grande	PR.SB	121	25,935	93	36
Salinas	PR.SA	123	31,113	180	69
San Germán	PR.SG	125	37,105	140	54
San Juan	PR.SJ	127	434,374	122	47
San Lorenzo	PR.SL	129	40,997	139	54
San Sebastián	PR.SS	131	44,204	184	71
Santa Isabel	PR.SI	133	21,665	89	34
Toa Alta	PR.TA	135	63,929	71	27
Toa Baja	PR.TB	137	94,085	62	24
Trujillo Alto	PR.TJ	139	75,728	54	21
Utuado	PR.UT	141	35,336	298	115
Vega Alta	PR.VA	143	37,910	73	28
Vega Baja	PR.VB	145	61,929	121	47
Vieques	PR.VQ	147	9,106	135	52
Villalba	PR.VL	149	27,913	96	37
Yabucoa	PR.YB	151	39,246	142	55
Yauco	PR.YU	153	46,384	178	69
78 municipalities			3,808,610	8,891	3,429
HASC: Hierarchical administrative subdivision code. F-6: Codes from FIPS PUB 6-4 (see note). Population: 2000-04-01 census. Capital: All municipalities have the same name as their capitals.

 

Note: FIPS PUB 5-2 lists codes for primary administrative divisions of the United States, and FIPS PUB 6-4 for secondary divisions. The FIPS PUB 5-2 codes for Puerto Rico are PR (alpha) and 72 (numeric). When the numeric FIPS 5-2 and 6-4 codes are concatenated, as in 72033 for Cataño, the result is a code that uniquely identifies a county-equivalent unit in the United States.

Postal codes: 

Puerto Rico uses five-digit postal codes from the U.S. system. They are in the range 006xx-009xx.

Further subdivisions:

Puerto Rico is also divided into eight senatorial districts, which are often shown on medium-scale maps of Puerto Rico, the number of municipalities being too great for convenient depiction. The senatorial districts change whenever the island gets redistricted, but their number and names have been fairly stable. Their names are Aguadilla, Arecibo, Bayamón, Guayama, Humacao, Mayagüez, Ponce, and San Juan; all but San Juan date back to Spanish colonial days. The capitals have the same names as the districts. The municipalities are subdivided into barrios.

Territorial extent: 

Puerto Rico consists of the islands of Puerto Rico, Vieques, Culebra, Mona, and many small neighboring islets. All of the municipalities except Culebra and Vieques (which occupy those respective islands) are mainly located on Puerto Rico island. Mona Island belongs to Mayagüez district; Culebra and Vieques, to Humacao district.

Change history: 

1. ~1915: Ceiba municipality split from Fajardo; Guánica split from Yauco; Guaynabo formed from parts of Bayamón and Río Piedras; Hormigueros split from Mayagüez; Jayuya split from Utuado; Las Piedras split from Humacao; Luquillo formed from parts of Fajardo and Río Grande; Villalba split from Juana Díaz.
2. ~1925: Cataño municipality split from Bayamón; name of Barros changed to Orocovis.
3. ~1956: San Juan senatorial district split from Bayamón. Río Piedras municipality merged with San Juan.
4. ~1975: Canóvanas municipality split from Loíza; Florida split from Barceloneta.

Population history:

Municipality	1910	1920	1930	1940	1950	1970	1980	1990	2000
Adjuntas	16,954	17,988	18,075	22,556	22,415	18,691	18,786	19,451	19,143
Aguada	11,587	12,981	14,670	17,923	20,727	25,658	31,567	35,911	42,042
Aguadilla	21,419	24,287	28,319	34,956	43,748	51,355	54,606	59,335	64,685
Aguas Buenas	8,292	10,741	12,885	14,671	15,546	18,600	22,429	25,424	29,032
Aibonito	10,815	13,264	16,361	16,819	18,206	20,044	22,167	24,971	26,493
Añasco	14,407	13,834	14,276	15,701	17,173	19,416	23,274	25,234	28,348
Arecibo	42,429	46,578	56,525	69,192	75,058	73,468	86,766	93,385	100,131
Arroyo	6,940	7,074	8,199	10,746	12,899	13,033	17,014	18,910	19,117
Barceloneta	11,644	13,442	15,751	18,545	19,899	20,792	18,942	20,947	22,322
Barranquitas	10,503	11,600	14,901	17,096	17,590	20,118	21,639	25,605	28,909
Bayamón	29,986	30,739	29,524	37,190	48,179	156,192	196,206	220,262	224,044
Cabo Rojo	19,562	22,412	23,792	28,586	29,488	26,060	34,045	38,521	46,911
Caguas	27,160	35,920	47,728	53,356	60,132	95,661	117,959	133,447	140,502
Camuy	11,342	14,228	16,149	18,922	20,865	19,922	24,884	28,917	35,244
Canóvanas							31,880	36,816	43,335
Carolina	15,327	15,563	18,751	24,046	29,143	107,643	165,954	177,806	186,076
Cataño			8,504	9,719	19,856	26,459	26,243	34,587	30,071
Cayey	17,711	23,618	28,797	31,391	36,634	38,432	41,099	46,553	47,370
Ceiba		5,973	7,275	7,021	9,192	10,312	14,944	17,145	18,004
Ciales	18,398	20,730	20,492	22,906	19,423	15,595	16,211	18,084	19,811
Cidra	10,595	14,789	19,662	20,392	20,518	23,892	28,365	35,601	42,753
Coamo	17,129	17,749	18,125	22,772	26,463	26,468	30,822	33,837	37,597
Comerío	11,170	14,708	16,715	18,539	17,969	18,819	18,212	20,265	20,002
Corozal	12,978	14,369	16,454	20,458	23,080	24,545	28,221	33,095	36,867
Culebra	1,315	839	847	860	877	732	1,265	1,542	1,868
Dorado	4,885	5,842	7,579	9,481	11,752	17,388	25,511	30,759	34,017
Fajardo	21,135	14,302	16,321	20,405	22,036	23,032	32,087	36,882	40,712
Florida							7,232	8,689	12,367
Guánica		9,948	10,238	12,685	15,575	14,889	18,799	19,984	21,888
Guayama	17,379	19,192	23,624	30,511	32,713	36,249	40,183	41,588	44,301
Guayanilla	10,354	12,083	13,121	15,577	17,373	18,144	21,050	21,581	23,072
Guaynabo		10,800	13,502	18,319	29,075	67,042	80,742	92,886	100,053
Gurabo	11,139	12,882	15,095	15,870	16,274	18,289	23,574	28,737	36,743
Hatillo	10,630	13,979	16,168	18,322	20,857	21,913	28,958	32,703	38,925
Hormigueros		4,584	4,872	6,098	6,907	10,827	14,030	15,212	16,614
Humacao	26,678	20,229	25,466	29,833	34,965	36,023	46,134	55,203	59,035
Isabela	16,852	19,809	23,068	25,842	29,061	30,430	37,435	39,147	44,444
Jayuya		12,463	12,223	14,589	15,062	13,588	14,722	15,527	17,318
Juana Díaz	29,157	18,529	19,516	23,396	27,660	36,270	43,505	45,198	50,531
Juncos	11,692	13,151	17,469	19,464	21,668	21,814	25,397	30,612	36,452
Lajas	11,071	11,908	12,454	14,736	16,275	16,545	21,236	23,271	26,261
Lares	22,650	25,197	27,351	29,914	29,921	25,263	26,743	29,015	34,415
Las Marías	10,046	10,736	8,881	9,626	10,806	7,841	8,747	9,306	11,061
Las Piedras		10,620	12,907	15,389	16,235	18,112	22,412	27,896	34,485
Loíza	13,317	15,804	18,762	22,145	24,313	39,062	20,867	29,307	32,537
Luquillo		6,251	7,799	8,851	9,979	10,390	14,895	18,100	19,817
Manatí	17,240	20,100	24,838	29,366	30,427	30,559	36,562	38,692	45,409
Maricao	7,158	8,291	6,463	7,724	7,353	5,991	6,737	6,206	6,449
Maunabo	7,106	7,973	9,084	10,792	11,742	10,792	11,813	12,347	12,741
Mayagüez	42,429	41,612	58,270	76,487	87,038	85,857	96,193	100,371	98,434
Moca	13,640	15,791	17,089	19,716	21,622	22,361	29,185	32,926	39,697
Morovis	12,446	14,660	17,332	19,167	19,294	19,059	21,142	25,288	29,965
Naguabo	14,365	15,788	18,212	19,180	20,991	17,996	20,617	22,620	23,753
Naranjito	8,876	10,503	11,645	13,954	15,949	19,913	23,633	27,914	29,709
Orocovis	15,028	15,758	16,115	19,770	21,085	20,201	19,332	21,158	23,844
Patillas	14,448	14,284	14,178	17,319	18,789	17,828	17,774	19,633	20,152
Peñuelas	11,991	13,598	13,278	14,789	14,867	15,973	19,116	22,515	26,719
Ponce	63,444	71,426	87,604	105,116	126,451	158,981	189,046	187,749	186,475
Quebradillas	8,152	9,404	10,190	11,494	13,720	15,582	19,728	21,425	25,450
Rincón	7,275	8,476	8,178	9,256	9,862	9,094	11,788	12,213	14,767
Río Grande	13,948	13,247	14,085	16,116	16,640	22,032	34,283	45,648	52,362
Río Piedras	18,880	23,035	40,853	68,290	143,897
Sabana Grande	11,523	12,305	11,881	14,146	16,080	16,343	20,207	22,843	25,935
Salinas	11,403	12,971	15,446	19,400	23,412	21,837	26,438	28,335	31,113
San Germán	22,143	23,848	23,768	26,473	29,514	27,990	32,922	34,962	37,105
San Juan	48,716	71,443	114,715	169,247	223,949	463,242	434,849	437,745	434,374
San Lorenzo	14,278	18,136	23,479	26,627	29,209	27,755	32,428	35,163	40,997
San Sebastián	18,904	22,049	25,691	30,266	34,439	30,157	35,690	38,799	44,204
Santa Isabel	6,959	7,257	8,886	11,468	13,462	16,056	19,854	19,318	21,665
Toa Alta	9,127	10,505	11,696	13,371	14,170	18,964	31,910	44,101	63,929
Toa Baja	6,254	7,121	9,865	11,410	15,795	46,384	78,246	89,454	94,085
Trujillo Alto	6,345	7,470	9,576	11,726	13,588	30,669	51,389	61,120	75,728
Utuado	41,054	35,135	37,434	42,531	46,615	35,494	34,505	34,980	35,336
Vega Alta	8,134	9,970	12,333	14,329	16,510	22,810	28,696	34,559	37,910
Vega Baja	12,831	15,756	20,406	23,105	28,896	35,327	47,115	55,997	61,929
Vieques	10,425	11,651	10,582	10,362	9,211	7,767	7,662	8,602	9,106
Villalba		13,040	11,847	12,871	14,903	18,733	20,734	23,559	27,913
Yabucoa	17,338	19,623	21,914	27,438	28,674	30,165	31,425	36,483	39,246
Yauco	31,504	25,848	27,787	30,533	33,657	35,103	37,742	42,058	46,384
Totals	1,118,012	1,299,809	1,543,913	1,869,255	2,205,398	2,712,033	3,196,520	3,522,037	3,808,610

 

Census dates are all April 1.

Sources: 

1. [1] World Almanac and Book of Facts, 1992 edition, has 1990 census data, credited as follows: "Source: Bureau of the Census U.S. Dept. of Commerce, Population figures are final counts from the census conducted on Apr. 1, 1990."
2. [2] Almanaque Mundial (1992 edition), Editorial America, Virginia Gardens, FL.
3. [3] 1990 Population of Puerto Rico  (map) also shows 1990 census data.
4. [4] Fifteenth Census of the United States: 1930. Vol. I, Population. U.S. Government Printing Office, Washington, 1931. Has census data for 1910, 1920, 1930.