List of the most populous counties in the United States

This is a list of counties in the United States with a population of more than 100,000 based on the national decennial US census conducted on April 1, 2010 and subsequent mid-2010 and mid-2018 official estimates released by the United States Census Bureau (USCB).

A map of the counties and county equivalents of the United States. The 100 most populous counties are highlighted, with counties having more than one million residents in orange, and counties having fewer than one million residents in green, based on the results of the April 1, 2010 United States census.

Many of the counties on the list include major cities or metropolitan areas. Five of the listed counties have consolidated city and county government, namely the City and County of Honolulu, Metropolitan Government of Nashville and Davidson County, Tennessee, City and County of Philadelphia, City and County of San Francisco and City and County of Denver.[1][2][3] New York County, Bronx County, Kings County, Queens County, and Richmond County, are coterminous with the respective boroughs of New York City, and fall under the jurisdiction of the combined city government. Connecticut, Rhode Island, and most of Massachusetts also don't have county governments.

List

This list lists the most populous US counties sorted according to the mid-2018 official estimate by the United States Census Bureau (USCB).

Rank	County	State	Land area (km²)[4]	Land area (mi²)[5]	April 1, 2010 census	July 1, 2018 official estimate	Mid-2010 to mid-2018 change (absolute)	Mid-2010 to mid-2018 change (%)	County seat
1	Los Angeles	California	10,509.87	4,057.88	9,818,605	10,105,518	286,193	2.92	Los Angeles
2	Cook	Illinois	2,448.38	945.33	5,194,675	5,180,493	-14,182	-0.27	Chicago
3	Harris	Texas	4,411.99	1,703.48	4,092,459	4,698,619	606,160	14.81	Houston
4	Maricopa	Arizona	23,828.26	9,200.14	3,817,117	4,410,824	593,707	15.55	Phoenix
5	San Diego	California	10,895.12	4,206.63	3,095,313	3,343,364	248,051	8.01	San Diego
6	Orange	California	2,047.56	790.57	3,010,232	3,185,968	175,736	5.84	Santa Ana
7	Miami-Dade	Florida	4,915.06	1,897.72	2,496,435	2,761,581	265,146	10.62	Miami
8	Dallas	Texas	2,256.60	871.28	2,368,139	2,637,772	269,633	11.39	Dallas
9	Kings	New York	183.41	70.82	2,504,700	2,582,830	78,130	3.12	Brooklyn, NYC
10	Riverside	California	18,664.70	7,206.48	2,189,641	2,450,758	261,117	11.93	Riverside
11	Queens	New York	281.10	108.53	2,230,722	2,278,906	48,184	2.16	Queens, NYC
12	King	Washington	5,479.29	2,115.57	1,931,249	2,233,163	301,914	15.63	Seattle
13	Clark	Nevada	20,438.71	7,891.43	1,951,269	2,231,647	280,378	14.37	Las Vegas
14	San Bernardino	California	51,947.23	20,056.94	2,035,210	2,171,603	136,393	6.70	San Bernardino
15	Tarrant	Texas	2,236.74	863.61	1,809,034	2,084,931	275,897	15.25	Fort Worth
16	Bexar	Texas	3,211.12	1,239.82	1,714,773	1,986,049	271,276	15.82	San Antonio
17	Broward	Florida	3,133.33	1,209.79	1,748,066	1,951,260	203,194	11.62	Fort Lauderdale
18	Santa Clara	California	3,341.34	1,290.10	1,781,642	1,937,570	155,928	8.75	San Jose
19	Wayne	Michigan	1,585.28	612.08	1,820,584	1,753,893	-66,691	-3.66	Detroit
20	Alameda	California	1,914.05	739.02	1,510,271	1,666,753	156,482	10.36	Oakland
21	New York	New York	59.13	22.83	1,585,873	1,628,701	42,828	2.70	Manhattan, NYC
22	Middlesex	Massachusetts	2,118.14	817.82	1,503,085	1,614,714	111,629	7.43	Lowell and Cambridge
23	Philadelphia	Pennsylvania	347.32	134.10	1,526,006	1,584,138	58,132	3.81	Philadelphia
24	Sacramento	California	2,498.42	964.64	1,418,788	1,540,975	122,187	8.61	Sacramento
25	Palm Beach	Florida	5,101.66	1,969.76	1,320,134	1,485,941	165,807	12.56	West Palm Beach
26	Suffolk	New York	2,362.20	912.05	1,493,350	1,481,093	-12,257	-0.82	Riverhead
27	Hillsborough	Florida	2,642.34	1,020.21	1,229,226	1,436,888	207,662	16.89	Tampa
28	Bronx	New York	109.03	42.10	1,385,108	1,432,132	47,024	3.39	Bronx, NYC
29	Nassau	New York	737.41	284.72	1,339,532	1,358,343	18,811	1.40	Mineola
30	Orange	Florida	2,339.87	903.43	1,145,956	1,348,975	203,019	17.72	Orlando
31	Franklin	Ohio	1,378.36	532.19	1,163,414	1,310,300	146,886	12.63	Columbus
32	Hennepin	Minnesota	1,433.79	553.59	1,152,425	1,259,428	107,003	9.29	Minneapolis
33	Oakland	Michigan	2,247.24	867.66	1,202,362	1,259,201	56,839	4.73	Pontiac
34	Travis	Texas	2,564.61	990.20	1,024,266	1,248,743	224,477	21.92	Austin
35	Cuyahoga	Ohio	1,184.12	457.19	1,280,122	1,243,857	-36,265	-2.83	Cleveland
36	Allegheny	Pennsylvania	1,890.88	730.07	1,223,348	1,218,452	-4,896	-0.40	Pittsburgh
37	Salt Lake	Utah	1,922.50	742.28	1,029,655	1,152,633	122,978	11.94	Salt Lake City
38	Fairfax	Virginia	1,012.60	390.97	1,081,726	1,150,795	69,069	6.39	Fairfax
39	Contra Costa	California	1,854.27	715.94	1,049,025	1,150,215	101,190	9.65	Martinez
40	Mecklenburg	North Carolina	1,356.75	523.84	919,628	1,093,901	174,273	18.95	Charlotte
41	Wake	North Carolina	2,163.21	835.22	900,993	1,092,305	191,312	21.23	Raleigh
42	Montgomery	Maryland	1,272.34	491.25	971,777	1,052,567	80,790	8.31	Rockville
43	Fulton	Georgia	1,363.98	526.63	920,581	1,050,114	129,533	14.07	Atlanta
44	Pima	Arizona	23,794.31	9,187.04	980,263	1,039,073	58,810	6.00	Tucson
45	Collin	Texas	2,178.76	841.22	782,341	1,005,146	222,805	28.48	McKinney
46	St. Louis	Missouri	1,315.20	507.80	998,954	996,945	-2,009	-0.20	Clayton
47	Fresno	California	15,431.13	5,957.99	930,450	994,400	63,950	6.87	Fresno
48	Honolulu	Hawaii	1,555.92	600.74	953,207	980,080	26,873	2.82	Honolulu
49	Pinellas	Florida	709.14	273.80	916,542	975,280	58,738	6.41	Clearwater
50	Westchester	New York	1,114.98	430.50	949,113	967,612	18,499	1.95	White Plains
51	Marion	Indiana	1,026.41	396.30	903,393	954,670	51,277	5.68	Indianapolis
52	Duval	Florida	1,974.07	762.19	864,263	950,181	85,918	9.94	Jacksonville
53	Milwaukee	Wisconsin	625.23	241.40	947,735	948,201	466	0.05	Milwaukee
54	Fairfield	Connecticut	1,618.46	624.89	916,829	943,823	26,994	2.94	Bridgeport
55	Bergen	New Jersey	603.49	233.01	905,116	936,692	31,576	3.49	Hackensack
56	Shelby	Tennessee	1,976.61	763.17	927,644	935,764	8,120	0.88	Memphis
57	DuPage	Illinois	848.22	327.50	916,924	928,589	11,665	1.27	Wheaton
58	Gwinnett	Georgia	1,114.69	430.38	805,321	927,781	122,460	15.21	Lawrenceville
59	Erie	New York	2,700.56	1,042.69	919,040	919,719	679	0.07	Buffalo
60	Prince George's	Maryland	1,250.16	482.69	863,420	909,308	45,888	5.31	Upper Marlboro
61	Kern	California	21,061.57	8,131.92	839,631	896,764	57,133	6.80	Bakersfield
62	Hartford	Connecticut	1,903.89	735.10	894,014	892,697	-1,317	-0.15	Hartford
63	Pierce	Washington	4,324.01	1,669.51	795,225	891,299	96,074	12.08	Tacoma
64	San Francisco	California	121.40	46.87	805,235	883,305	78,070	9.70	San Francisco
65	Macomb	Michigan	1,241.18	479.22	840,978	874,759	33,781	4.02	Mount Clemens
66	Hidalgo	Texas	4,068.52	1,570.87	774,769	865,939	91,170	11.77	Edinburg
67	Denton	Texas	2,275.13	878.43	662,614	859,064	196,450	29.65	Denton
68	New Haven	Connecticut	1,565.66	604.51	862,477	857,620	-4,857	-0.56	New Haven
69	Ventura	California	4,773.69	1,843.13	823,318	850,967	27,649	3.36	Ventura
70	El Paso	Texas	2,622.86	1,012.69	800,647	840,758	40,111	5.01	El Paso
71	Worcester	Massachusetts	3,912.88	1,510.77	798,552	830,839	32,287	4.04	Worcester
72	Middlesex	New Jersey	800.08	308.91	809,858	829,685	19,827	2.45	New Brunswick
73	Montgomery	Pennsylvania	1,251.07	483.04	799,874	828,604	28,730	3.59	Norristown
74	Baltimore	Maryland	1,549.59	598.30	805,029	828,431	23,402	2.91	Towson
75	Hamilton	Ohio	1,051.30	405.91	802,374	816,684	14,310	1.78	Cincinnati
76	Snohomish	Washington	5,406.01	2,087.27	713,335	814,901	101,566	14.24	Everett
77	Multnomah	Oregon	1,117.05	431.30	735,334	811,880	76,546	10.41	Portland
78	Suffolk	Massachusetts	150.62	58.15	722,023	807,252	85,229	11.80	Boston
79	Essex	New Jersey	326.89	126.21	783,969	799,767	15,798	2.02	Newark
80	Oklahoma	Oklahoma	1,835.83	708.82	718,633	792,582	73,949	10.29	Oklahoma City
81	Essex	Massachusetts	1,275.73	492.56	743,159	790,638	47,479	6.39	Salem and Lawrence
82	Fort Bend	Texas	2,292	885	585,375	787,858	202,483	34.59	Richmond
83	Jefferson	Kentucky	985.27	380.42	741,096	770,517	29,421	3.97	Louisville
84	San Mateo	California	1,161.37	448.41	718,451	769,545	51,094	7.11	Redwood City
85	Cobb	Georgia	879.43	339.55	688,078	756,865	68,787	10.00	Marietta
86	DeKalb	Georgia	693.03	267.58	691,893	756,558	64,665	9.35	Decatur
87	Lee	Florida	2,031.88	784.51	618,754	754,610	135,856	21.96	Fort Myers
88	San Joaquin	California	3,603.51	1,391.32	685,306	752,660	67,354	9.83	Stockton
89	Monroe	New York	1,702.15	657.21	744,344	742,474	-1,870	-0.25	Rochester
90	Denver	Colorado	401.36	154.97	600,158	716,492	116,334	19.38	Denver
91	El Paso	Colorado	5,508.39	2,126.80	622,263	713,856	91,593	14.72	Colorado Springs
92	Polk	Florida	5,208	2,011	602,095	708,009	105,914	17.59	Bartow
93	Norfolk	Massachusetts	1,025.91	396.11	670,850	705,388	34,538	5.15	Dedham
94	Washington, D.C.		177.0	68.34	601,723	702,455	100,732	16.74	N/A
95	Lake	Illinois	1,149.10	443.67	703,462	700,832	-2,630	-0.37	Waukegan
96	Jackson	Missouri	1,565.55	604.46	674,158	700,307	26,149	3.88	Independence and Kansas City
97	Davidson	Tennessee	1,305.44	504.03	626,681	692,587	65,906	10.52	Nashville
98	Will	Illinois	2,167.58	836.91	677,560	692,310	14,750	2.18	Joliet
99	Bernalillo	New Mexico	3,006.53	1,160.83	662,564	678,701	16,137	2.44	Albuquerque
100	Hudson	New Jersey	119.63	46.19	634,266	676,061	41,795	6.59	Jersey City

Gallery

Downtown Los Angeles, county seat of Los Angeles County, California, the most populous county in the United States. County buildings and the civic center, pictured at the bottom right.
Downtown Chicago, in Cook County, Illinois, the second most populous county in the United States.
Downtown Houston, located in Harris County, Texas, the third most populous county in the United States.
Downtown Phoenix, Arizona, county seat of the fourth most populous county in the United States, Maricopa.
Downtown San Diego, California. San Diego County is the fifth most populous county in the United States.
Aerial view of Orange County, California, the 6th most populous county in the United States.
Downtown Miami in Miami-Dade County, the largest county in Florida, and the county seat of the 7th most populous county in the United States.
Row houses in Brooklyn, Kings County, New York, the 9th most populous county in the United States.

References

"This Is Your City and County of Honolulu Government". City and County of Honolulu. Archived from the original on January 20, 2008. Retrieved January 23, 2008.
"City and County Organizational Chart". City and County of San Francisco. Archived from the original on February 3, 2008. Retrieved January 23, 2008.
"Active Colorado Municipalities as of January 26, 2010". Colorado Department of Local Affairs. Archived from the original on December 12, 2009. Retrieved January 26, 2010.
GeoHive - the United States of America - US States and Counties Archived April 30, 2012, at the Wayback Machine (attached Excel spreadsheet)
The area in square kilometers of the column to the left divided by 2.589988110336 (1.609344²).

This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.

[1] "This Is Your City and County of Honolulu Government". City and County of Honolulu. Archived from the original on January 20, 2008. Retrieved January 23, 2008.

[2] "City and County Organizational Chart". City and County of San Francisco. Archived from the original on February 3, 2008. Retrieved January 23, 2008.

[3] "Active Colorado Municipalities as of January 26, 2010". Colorado Department of Local Affairs. Archived from the original on December 12, 2009. Retrieved January 26, 2010.

[GH-4] GeoHive - the United States of America - US States and Counties Archived April 30, 2012, at the Wayback Machine (attached Excel spreadsheet)

[Km2ToMi2-5] The area in square kilometers of the column to the left divided by 2.589988110336 (1.609344²).

United States county-related lists
General	Index By state / territory FIPS codes Former counties Secession proposals
Demographics	Population African-American majority in 2000 in 2010 Hispanic/Latino majority Native American majority Most populous counties by state / territory Most densely populated county least Shortest life expectancy Longest life expectancy
Economy	Highest-income Lowest-income Per capita income
Geography	Largest area Smallest area Island counties
Name origins	Etymologies A–D E–I J–M N–R S–Z Most common names Named after Confederate historical figures Named after rivers Named after U.S. Presidents Named after women
See also	County statistics of the United States Smithsonian trinomial