Product sample · Geography master

Geography master

We use one set of geographic codes to join everything else. Each state has an official Census GEOID, and so does each county, place and ZIP Code Tabulation Area, along with land area and coordinates. On top of that we add our own links between them, such as ZCTA to nearest place and place to county.

Counties & equivalents

3,222

3,144 in the 50 states + DC; 78 in Puerto Rico

Places

32,363

Incorporated places and census-designated places

ZCTAs

33,791

Census ZIP Code Tabulation Areas

Metro / micro areas

393 / 542

Core-based statistical areas

Source: U.S. Census Bureau, 2026 Gazetteer Files. 2026 Gazetteer (downloaded Sep 10, 2026). ZCTAs are Census statistical areas built from blocks. They approximate USPS ZIP Codes, but they are not the same thing.

States and DC

Pick a state to see every county with its Census GEOID and HUD rents joined in, plus sample places, housing indicators and metro permits.

State geography summary
State	FIPS	Counties	Places	of which CDPs	ZCTAs assigned¹	Land area, sq mi	New-home communities²
Alabama	01	67	595	130	653	50,652	490
Alaska	02	30	355	206	241	571,409	1
Arizona	04	15	467	375	415	113,656	649
Arkansas	05	75	626	125	608	51,992	116
California	06	58	1,622	1,139	1,794	155,860	1,143
Colorado	08	64	485	212	520	103,637	443
Connecticut	09	9	215	185	284	4,843	4
Delaware	10	3	79	22	67	1,949	145
District of Columbia	11	1	1	0	—	61	3
Florida	12	67	958	547	1,009	53,658	2,157
Georgia	13	159	676	138	741	57,718	885
Hawaii	15	5	163	163	97	6,423	7
Idaho	16	44	235	36	270	82,645	254
Illinois	17	102	1,461	167	1,391	55,514	166
Indiana	18	92	974	408	801	35,825	323
Iowa	19	99	1,026	87	959	55,854	103
Kansas	20	105	740	114	698	81,759	73
Kentucky	21	120	553	138	759	39,486	147
Louisiana	22	64	484	179	538	43,221	192
Maine	23	16	155	132	422	30,845	5
Maryland	24	24	536	379	466	9,711	179
Massachusetts	25	14	248	190	526	7,801	27
Michigan	26	83	745	212	989	56,613	250
Minnesota	27	87	916	60	879	79,632	195
Mississippi	28	82	427	127	421	46,925	70
Missouri	29	115	1,081	134	1,008	68,747	155
Montana	30	56	497	370	365	145,550	10
Nebraska	31	93	593	65	577	76,815	26
Nevada	32	17	138	119	178	109,860	279
New Hampshire	33	10	100	87	224	8,954	13
New Jersey	34	21	701	377	595	7,355	113
New Mexico	35	33	528	423	370	121,313	57
New York	36	62	1,293	699	1,695	47,123	40
North Carolina	37	100	785	233	840	48,624	1,386
North Dakota	38	53	406	51	388	68,994	4
Ohio	39	88	1,265	342	1,219	40,859	400
Oklahoma	40	77	846	246	661	68,597	239
Oregon	41	36	426	185	421	95,997	188
Pennsylvania	42	67	2,002	990	1,798	44,742	303
Rhode Island	44	5	36	28	80	1,034	4
South Carolina	45	46	475	204	421	30,064	874
South Dakota	46	66	485	175	371	75,809	2
Tennessee	47	95	504	159	623	41,225	449
Texas	48	254	1,864	634	1,980	261,259	3,050
Utah	49	29	334	79	294	82,596	338
Vermont	50	14	180	140	258	9,217	1
Virginia	51	133	700	473	849	39,481	437
Washington	53	39	639	358	599	66,457	494
West Virginia	54	55	439	210	717	24,041	33
Wisconsin	55	72	807	199	781	54,168	74
Wyoming	56	23	205	106	173	97,089	1

Counties, places, FIPS and land area: U.S. Census Bureau, 2026 Gazetteer Files (2026 Gazetteer (downloaded Sep 10, 2026)).
¹ ZCTAs assigned to a state by USA Houses LLC (USA Houses LLC ZCTA master, built from the 2026 Census ZCTA Gazetteer, compiled Sep 11, 2026). We hold back 600 ZCTAs whose assigned state disagrees with the USPS ZIP prefix or has an unknown prefix, and don't count them here. There are no DC rows yet.
² USA Houses LLC new-construction catalog (NewUSAHouses.com), canonical catalog, last committed 2026-09-22. This is USA Houses LLC research, not government data.