List of the most populous counties in the United States
This is a list of the 100 most populous counties in the United States based on the national decennial US census conducted on April 1, 2020 and vintage Census population estimates for July 1, 2022.
Many of the counties on the list include major cities or metropolitan areas in all parts of the United States. Six 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, City of Jacksonville and Duval County and City and County of Denver. New York County, Bronx County, Kings County, Queens County and Richmond County are coterminous with the respective boroughs of New York City; they fall under the jurisdiction of the combined city government. Independent cities are not counted.
Many of the most populous counties listed are in Southern California, Illinois, Texas and New York and roughly correspond to the most populous cities in the United States. Counties in the Western United States are typically larger by area, so they often have higher raw populations even with comparable population densities.
List
This list lists the most populous US counties sorted according to both the 2020 official enumeration and 2022 vintage population estimates by the United States Census Bureau (USCB).
Rank | County | State | Land area | April 1, 2020 census |
July 1, 2022 estimates |
Mid-2020 to mid-2022 change |
County seat | ||
---|---|---|---|---|---|---|---|---|---|
km2 | mi2 | absolute | % | ||||||
1 | Los Angeles | California | 10,509.87 | 4,057.88 | 10,014,009 | 9,721,138 | -292,871 | -2.9 | Los Angeles |
2 | Cook | Illinois | 2,448.38 | 945.33 | 5,275,541 | 5,109,292 | -166,249 | -3.2 | Chicago |
3 | Harris | Texas | 4,411.99 | 1,703.48 | 4,731,145 | 4,780,913 | 49,768 | 1.1 | Houston |
4 | Maricopa | Arizona | 23,828.26 | 9,200.14 | 4,420,568 | 4,551,524 | 130,956 | 3.0 | Phoenix |
5 | San Diego | California | 10,895.12 | 4,206.63 | 3,298,634 | 3,276,208 | -22,426 | -0.7 | San Diego |
6 | Orange | 2,047.56 | 790.57 | 3,186,989 | 3,151,184 | -35,805 | -1.1 | Santa Ana | |
7 | Miami-Dade | Florida | 4,915.06 | 1,897.72 | 2,701,767 | 2,673,837 | -27,930 | -1.0 | Miami |
8 | Dallas | Texas | 2,256.60 | 871.28 | 2,613,539 | 2,600,840 | -12,699 | -0.5 | Dallas |
9 | Kings | New York | 183.41 | 70.82 | 2,736,074 | 2,590,516 | -145,558 | -5.3 | Brooklyn, NYC |
10 | Riverside | California | 18,664.70 | 7,206.48 | 2,418,185 | 2,473,902 | 55,717 | 2.3 | Riverside |
11 | Clark | Nevada | 20,438.71 | 7,891.43 | 2,265,461 | 2,322,985 | 57,524 | 2.5 | Las Vegas |
12 | Queens | New York | 281.10 | 108.53 | 2,405,464 | 2,278,029 | -127,435 | -5.3 | Queens, NYC |
13 | King | Washington | 5,479.29 | 2,115.57 | 2,269,675 | 2,266,789 | -2,886 | -0.1 | Seattle |
14 | San Bernardino | California | 51,947.23 | 20,056.94 | 2,181,654 | 2,193,656 | 12,002 | 0.6 | San Bernardino |
15 | Tarrant | Texas | 2,236.74 | 863.61 | 2,110,640 | 2,154,595 | 43,955 | 2.1 | Fort Worth |
16 | Bexar | 3,211.12 | 1,239.82 | 2,009,324 | 2,059,530 | 50,206 | 2.5 | San Antonio | |
17 | Broward | Florida | 3,133.33 | 1,209.79 | 1,944,375 | 1,947,026 | 2,651 | 0.1 | Fort Lauderdale |
18 | Santa Clara | California | 3,341.34 | 1,290.10 | 1,936,259 | 1,870,945 | -65,314 | -3.4 | San Jose |
19 | Wayne | Michigan | 1,585.28 | 612.08 | 1,793,561 | 1,757,043 | -36,518 | -2.0 | Detroit |
20 | Alameda | California | 1,914.05 | 739.02 | 1,682,353 | 1,628,997 | -53,356 | -3.2 | Oakland |
21 | Middlesex | Massachusetts | 2,118.14 | 817.82 | 1,632,002 | 1,617,105 | -14,897 | -0.9 | Lowell and Cambridge |
22 | New York | New York | 59.13 | 22.83 | 1,694,251 | 1,596,273 | -97,978 | -5.8 | Manhattan, NYC |
23 | Sacramento | California | 2,498.42 | 964.64 | 1,584,169 | 1,588,921 | 4,752 | 0.3 | Sacramento |
24 | Philadelphia | Pennsylvania | 347.32 | 134.10 | 1,603,797 | 1,567,258 | -36,539 | -2.3 | Philadelphia |
25 | Suffolk | New York | 2,362.20 | 912.05 | 1,525,920 | 1,525,465 | -455 | -0.0 | Riverhead |
26 | Palm Beach | Florida | 5,100.00 | 1,970.00 | 1,492,191 | 1,518,477 | 26,286 | 1.8 | West Palm Beach |
27 | Hillsborough | 2,642.34 | 1,020.21 | 1,459,762 | 1,513,301 | 53,539 | 3.7 | Tampa | |
28 | Orange | 2,339.87 | 903.43 | 1,429,908 | 1,452,726 | 22,818 | 1.6 | Orlando | |
29 | Nassau | New York | 737.41 | 284.72 | 1,395,774 | 1,383,726 | -12,048 | -0.9 | Mineola |
30 | Bronx | 109.03 | 42.10 | 1,472,654 | 1,379,946 | -92,708 | -6.3 | Bronx, NYC | |
31 | Travis | Texas | 2,564.61 | 990.20 | 1,290,188 | 1,326,436 | 36,248 | 2.8 | Austin |
32 | Franklin | Ohio | 1,378.36 | 532.19 | 1,323,807 | 1,321,820 | -1,987 | -0.2 | Columbus |
33 | Oakland | Michigan | 2,247.24 | 867.66 | 1,274,395 | 1,269,431 | -4,964 | -0.4 | Pontiac |
34 | Hennepin | Minnesota | 1,433.79 | 553.59 | 1,281,565 | 1,260,121 | -21,444 | -1.7 | Minneapolis |
35 | Cuyahoga | Ohio | 1,184.12 | 457.19 | 1,264,817 | 1,236,041 | -28,776 | -2.3 | Cleveland |
36 | Allegheny | Pennsylvania | 1,890.88 | 730.07 | 1,250,578 | 1,233,253 | -17,325 | -1.4 | Pittsburgh |
37 | Salt Lake | Utah | 1,922.50 | 742.28 | 1,185,238 | 1,186,257 | 1,019 | 0.1 | Salt Lake City |
38 | Wake | North Carolina | 2,163.21 | 835.22 | 1,129,410 | 1,175,021 | 45,611 | 4.0 | Raleigh |
39 | Collin | Texas | 2,178.76 | 841.22 | 1,064,465 | 1,158,696 | 94,231 | 8.9 | McKinney |
40 | Contra Costa | California | 1,854.27 | 715.94 | 1,165,927 | 1,156,966 | -8,961 | -0.8 | Martinez |
41 | Mecklenburg | North Carolina | 1,356.75 | 523.84 | 1,115,482 | 1,145,392 | 29,910 | 2.7 | Charlotte |
42 | Fairfax | Virginia | 1,012.60 | 390.97 | 1,150,309 | 1,138,331 | -11,978 | -1.0 | Fairfax |
43 | Fulton | Georgia | 1,363.98 | 526.63 | 1,066,710 | 1,074,634 | 7,924 | 0.7 | Atlanta |
44 | Pima | Arizona | 23,794.31 | 9,187.04 | 1,043,433 | 1,057,597 | 14,164 | 1.4 | Tucson |
45 | Montgomery | Maryland | 1,272.34 | 491.25 | 1,062,061 | 1,052,521 | -9,540 | -0.9 | Rockville |
46 | Duval | Florida | 1,974.07 | 762.19 | 995,567 | 1,016,536 | 20,969 | 2.1 | Jacksonville |
47 | Fresno | California | 15,431.13 | 5,957.99 | 1,008,654 | 1,015,190 | 6,536 | 0.6 | Fresno |
48 | Honolulu | Hawaii | 1,555.92 | 600.74 | 1,016,508 | 995,638 | -20,870 | -2.1 | Honolulu |
49 | Westchester | New York | 1,114.98 | 430.50 | 1,004,457 | 990,427 | -14,030 | -1.4 | White Plains |
50 | St. Louis | Missouri | 1,315.20 | 507.80 | 1,004,125 | 990,414 | -13,711 | -1.4 | Clayton |
51 | Capitol | Connecticut | 2,660.80 | 1,027.34 | 976,248 | 981,447 | 5,199 | 0.5 | Hartford |
52 | Denton | Texas | 2,275.13 | 878.43 | 906,422 | 977,281 | 70,859 | 7.8 | Denton |
53 | Gwinnett | Georgia | 1,114.69 | 430.38 | 957,062 | 975,353 | 18,291 | 1.9 | Lawrenceville |
54 | Marion | Indiana | 1,026.41 | 396.30 | 977,203 | 969,466 | -7,737 | -0.8 | Indianapolis |
55 | Pinellas | Florida | 709.14 | 273.80 | 959,107 | 961,739 | 2,632 | 0.3 | Clearwater |
56 | Bergen | New Jersey | 603.49 | 233.01 | 955,732 | 952,997 | -2,735 | -0.3 | Hackensack |
57 | Erie | New York | 2,700.56 | 1,042.69 | 954,236 | 950,312 | -3,924 | -0.4 | Buffalo |
58 | Prince George's | Maryland | 1,250.16 | 482.69 | 967,201 | 946,971 | -20,230 | -2.1 | Upper Marlboro |
59 | Pierce | Washington | 4,324.01 | 1,669.51 | 921,130 | 927,380 | 6,250 | 0.7 | Tacoma |
60 | DuPage | Illinois | 848.22 | 327.50 | 932,877 | 920,901 | -11,976 | -1.3 | Wheaton |
61 | Milwaukee | Wisconsin | 625.23 | 241.40 | 939,489 | 918,661 | -20,828 | -2.2 | Milwaukee |
62 | Shelby | Tennessee | 1,976.61 | 763.17 | 929,744 | 916,371 | -13,373 | -1.4 | Memphis |
63 | Kern | California | 21,061.57 | 8,131.92 | 909,235 | 916,108 | 6,873 | 0.8 | Bakersfield |
64 | Fort Bend | Texas | 2,292 | 885 | 822,779 | 889,146 | 66,367 | 8.1 | Richmond |
65 | Hidalgo | 4,068.52 | 1,570.87 | 870,781 | 888,367 | 17,586 | 2.0 | Edinburg | |
66 | Macomb | Michigan | 1,241.18 | 479.22 | 881,217 | 874,195 | -7,022 | -0.8 | Mount Clemens |
67 | El Paso | Texas | 2,622.86 | 1,012.69 | 865,657 | 868,763 | 3,106 | 0.4 | El Paso |
68 | Montgomery | Pennsylvania | 1,251.07 | 483.04 | 856,553 | 864,683 | 8,130 | 0.9 | Norristown |
69 | Worcester | Massachusetts | 3,912.88 | 1,510.77 | 862,111 | 862,927 | 816 | 0.1 | Worcester |
70 | Middlesex | New Jersey | 800.08 | 308.91 | 863,162 | 861,418 | -1,744 | -0.2 | New Brunswick |
71 | Essex | 326.89 | 126.21 | 863,728 | 849,477 | -14,251 | -1.6 | Newark | |
72 | Baltimore | Maryland | 1,549.59 | 598.30 | 854,535 | 846,161 | -8,374 | -1.0 | Towson |
73 | Snohomish | Washington | 5,406.01 | 2,087.27 | 827,957 | 840,079 | 12,122 | 1.5 | Everett |
74 | Ventura | California | 4,773.69 | 1,843.13 | 843,843 | 832,605 | -11,238 | -1.3 | Ventura |
75 | Hamilton | Ohio | 1,051.30 | 405.91 | 830,639 | 825,037 | -5,602 | -0.7 | Cincinnati |
76 | Lee | Florida | 2,031.88 | 784.51 | 760,822 | 822,453 | 61,631 | 8.1 | Fort Myers |
77 | San Francisco | California | 121.40 | 46.87 | 873,965 | 808,437 | -65,528 | -7.5 | San Francisco |
78 | Essex | Massachusetts | 1,275.73 | 492.56 | 809,829 | 806,765 | -3,064 | -0.4 | Salem and Lawrence |
79 | Oklahoma | Oklahoma | 1,835.83 | 708.82 | 796,292 | 802,559 | 6,267 | 0.8 | Oklahoma City |
80 | Multnomah | Oregon | 1,117.05 | 431.30 | 815,428 | 795,083 | -20,345 | -2.5 | Portland |
81 | San Joaquin | California | 3,603.51 | 1,391.32 | 779,233 | 793,229 | 13,996 | 1.8 | Stockton |
82 | Polk | Florida | 4,660 | 1,798 | 725,046 | 787,404 | 62,358 | 8.6 | Bartow |
83 | Jefferson | Kentucky | 985.27 | 380.42 | 782,969 | 773,399 | -9,570 | -1.2 | Louisville |
84 | Cobb | Georgia | 879.43 | 339.55 | 766,149 | 771,952 | 5,803 | 0.8 | Marietta |
85 | Suffolk | Massachusetts | 150.62 | 58.15 | 797,936 | 766,381 | -31,555 | -4.0 | Boston |
86 | DeKalb | Georgia | 693.03 | 267.58 | 764,382 | 762,820 | -1,562 | -0.2 | Decatur |
87 | Monroe | New York | 1,702.15 | 657.21 | 759,443 | 752,035 | -7,408 | -1.0 | Rochester |
88 | El Paso | Colorado | 5,508.39 | 2,126.80 | 730,395 | 740,567 | 10,172 | 1.4 | Colorado Springs |
89 | San Mateo | California | 1,161.37 | 448.41 | 764,442 | 729,181 | -35,261 | -4.6 | Redwood City |
90 | Norfolk | Massachusetts | 1,025.91 | 396.11 | 725,981 | 725,531 | -450 | -0.1 | Dedham |
91 | Jackson | Missouri | 1,565.55 | 604.46 | 717,204 | 716,531 | -673 | -0.1 | Independence and Kansas City |
92 | Denver | Colorado | 401.36 | 154.97 | 715,522 | 713,252 | -2,270 | -0.3 | Denver |
93 | Lake | Illinois | 1,149.10 | 443.67 | 714,342 | 709,150 | -5,192 | -0.7 | Waukegan |
94 | Davidson | Tennessee | 1,305.44 | 504.03 | 715,884 | 708,144 | -7,740 | -1.1 | Nashville |
95 | Hudson | New Jersey | 119.63 | 46.19 | 724,854 | 703,366 | -21,488 | -3.0 | Jersey City |
96 | Utah | Utah | 5,188.91 | 2,003.45 | 659,399 | 702,434 | 43,035 | 6.5 | Provo |
97 | Will | Illinois | 2,167.58 | 836.91 | 696,355 | 696,757 | 402 | 0.1 | Joliet |
98 | Montgomery | Texas | 2,699.23 | 1,042.18 | 620,443 | 678,490 | 58,047 | 9.4 | Conroe |
99 | Tulsa | Oklahoma | 1,476.86 | 570.22 | 669,279 | 677,358 | 8,079 | 1.2 | Tulsa |
100 | Bernalillo | New Mexico | 3,006.53 | 1,160.83 | 676,444 | 672,508 | -3,936 | -0.6 | Albuquerque |
Gallery
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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.
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Downtown Chicago, in Cook County, Illinois, the second-most populous county in the United States.
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Downtown Houston, located in Harris County, Texas, the third-most populous county in the United States.
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Downtown Phoenix, Arizona, county seat of the fourth-most populous county in the United States, Maricopa.
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Downtown San Diego, California. San Diego County is the fifth-most populous county in the United States.
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Aerial view of Orange County, California, the sixth-most populous county in the United States.
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Downtown Miami in Miami-Dade County, the largest county in Florida, and the county seat of the seventh-most populous county in the United States.
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Uptown Dallas with Downtown Dallas on the end, located in Dallas County, Texas, the eighth-most populous county in the United States.