Liste der 100 größten Countys der Vereinigten Staaten nach Einwohnerzahl
# Liste der 100 größten Countys der Vereinigten Staaten nach Einwohnerzahl

Dies ist eine Liste der 100 größten Countys der Vereinigten Staaten nach Einwohnerzahl mit Stand Juli 2023, dem Datum der letzten Schätzung des US Census Bureau.

## Liste

| Rang | County | Bundesstaat | County Seat | Einwohner | Größe [km²] |
| 1 | Los Angeles County | USA-Kalifornien Kalifornien | Los Angeles | 9.663.345 | 12.308 |
| 2 | Cook County | USA-Illinois Illinois | Chicago | 5.087.072 | 4.235 |
| 3 | Harris County | USA-Texas Texas | Houston | 4.835.125 | 4.604 |
| 4 | Maricopa County | USA-Arizona Arizona | Phoenix | 4.585.871 | 23.891 |
| 5 | San Diego County | USA-Kalifornien Kalifornien | San Diego | 3.269.973 | 11.721 |
| 6 | Orange County | USA-Kalifornien Kalifornien | Santa Ana | 3.135.755 | 2.455 |
| 7 | Miami-Dade County | USA-Florida Florida | Miami | 2.686.867 | 6.297 |
| 8 | Dallas County | USA-Texas Texas | Dallas | 2.606.358 | 2.353 |
| 9 | Kings County | USA-New York New York | keiner | 2.561.225 | 251 |
| 10 | Riverside County | USA-Kalifornien Kalifornien | Riverside | 2.492.442 | 18.915 |
| 11 | Clark County | USA-Nevada Nevada | Las Vegas | 2.336.573 | 20.955 |
| 12 | King County | USA-Washington Washington | Seattle | 2.271.380 | 5.974 |
| 13 | Queens County | USA-New York New York | keiner | 2.252.196 | 462 |
| 14 | San Bernardino County | USA-Kalifornien Kalifornien | San Bernardino | 2.195.611 | 52.073 |
| 15 | Tarrant County | USA-Texas Texas | Fort Worth | 2.182.947 | 2.324 |
| 16 | Bexar County | USA-Texas Texas | San Antonio | 2.087.679 | 3.255 |
| 17 | Broward County | USA-Florida Florida | Fort Lauderdale | 1.962.531 | 3.418 |
| 18 | Santa Clara County | USA-Kalifornien Kalifornien | San José | 1.877.592 | 3.377 |
| 19 | Wayne County | USA-Michigan Michigan | Detroit | 1.751.169 | 1.741 |
| 20 | Middlesex County | USA-Massachusetts Massachusetts | Cambridge und Lowell | 1.623.952 | 2.195 |
| 21 | Alameda County | USA-Kalifornien Kalifornien | Oakland | 1.622.188 | 2.127 |
| 22 | Manhattan County | USA-New York New York | keiner | 1.597.451 | 88 |
| 23 | Sacramento County | USA-Kalifornien Kalifornien | Sacramento | 1.584.288 | 2.578 |
| 24 | Philadelphia County | USA-Pennsylvania Pennsylvania | Philadelphia | 1.550.542 | 369 |
| 25 | Hillsborough County | USA-Florida Florida | Tampa | 1.535.564 | 3.279 |
| 26 | Palm Beach County | USA-Florida Florida | West Palm Beach | 1.533.801 | 6.181 |
| 27 | Suffolk County | USA-New York New York | Riverhead | 1.523.170 | 6.146 |
| 28 | Orange County | USA-Florida Florida | Orlando | 1.471.416 | 2.601 |
| 29 | Nassau County | USA-New York New York | Mineola | 1.381.715 | 1.173 |
| 30 | Bronx County | USA-New York New York | keiner | 1.356.476 | 149 |
| 31 | Travis County | USA-Texas Texas | Austin | 1.334.961 | 2.650 |
| 32 | Franklin County | USA-Ohio Ohio | Columbus | 1.326.063 | 1.408 |
| 33 | Oakland County | USA-Michigan Michigan | Pontiac | 1.270.426 | 2.532 |
| 34 | Hennepin County | USA-Minnesota Minnesota | Minneapolis | 1.258.713 | 1.571 |
| 35 | Cuyahoga County | USA-Ohio Ohio | Cleveland | 1.233.088 | 3.226 |
| 36 | Allegheny County | USA-Pennsylvania Pennsylvania | Pittsburgh | 1.224.825 | 1.929 |
| 37 | Collin County | USA-Texas Texas | McKinney | 1.195.359 | 2.294 |
| 38 | Wake County | USA-North Carolina North Carolina | Raleigh | 1.190.275 | 2.220 |
| 39 | Salt Lake County | USA-Utah Utah | Salt Lake City | 1.185.813 | 2.092 |
| 40 | Mecklenburg County | USA-North Carolina North Carolina | Charlotte | 1.163.701 | 1.415 |
| 41 | Contra Costa County | USA-Kalifornien Kalifornien | Martinez | 1.155.025 | 2.078 |
| 42 | Fairfax County | USA-Virginia Virginia | Fairfax | 1.141.878 | 1.053 |
| 43 | Fulton County | USA-Georgia Georgia | Atlanta | 1.079.105 | 1.385 |
| 44 | Pima County | USA-Arizona Arizona | Tucson | 1.063.162 | 23.799 |
| 45 | Montgomery County | USA-Maryland Maryland | Rockville | 1.058.474 | 1.313 |
| 46 | Duval County | USA-Florida Florida | Jacksonville | 1.030.822 | 2.378 |
| 47 | Fresno County | USA-Kalifornien Kalifornien | Fresno | 1.017.162 | 15.585 |
| 48 | Denton County | USA-Texas Texas | Denton | 1.007.703 | 2.481 |
| 49 | Westchester County | USA-New York New York | White Plains | 990.817 | 1.295 |
| 50 | Honolulu City and County | USA-Hawaii Hawaii | Honolulu | 989.408 | 5.509 |
| 51 | St. Louis County | USA-Missouri Missouri | Clayton | 987.059 | 1.356 |
| 52 | Gwinnett County | USA-Georgia Georgia | Lawrenceville | 983.526 | 1.131 |
| 53 | Marion County | USA-Indiana Indiana | Indianapolis | 968.460 | 1.044 |
| 54 | Pinellas County | USA-Florida Florida | Clearwater | 961.596 | 1.574 |
| 55 | Bergen County | USA-New Jersey New Jersey | Hackensack | 957.736 | 639 |
| 56 | Prince George’s County | USA-Maryland Maryland | Upper Marlboro | 947.430 | 1.291 |
| 57 | Erie County | USA-New York New York | Buffalo | 946.147 | 3.178 |
| 58 | Pierce County | USA-Washington Washington | Tacoma | 928.696 | 4.679 |
| 59 | DuPage County | USA-Illinois Illinois | Wheaton | 921.213 | 872 |
| 60 | Fort Bend County | USA-Texas Texas | Richmond | 916.778 | 2.265 |
| 61 | Milwaukee County | USA-Wisconsin Wisconsin | Milwaukee | 916.205 | 3.081 |
| 62 | Kern County | USA-Kalifornien Kalifornien | Bakersfield | 913.820 | 21.138 |
| 63 | Shelby County | USA-Tennessee Tennessee | Memphis | 910.042 | 2.030 |
| 64 | Hidalgo County | USA-Texas Texas | Edinburg | 898.471 | 4.099 |
| 65 | Macomb County | USA-Michigan Michigan | Mount Clemens | 875.101 | 1.476 |
| 66 | El Paso County | USA-Texas Texas | El Paso | 869.880 | 2.628 |
| 67 | Montgomery County | USA-Pennsylvania Pennsylvania | Norristown | 868.742 | 1.262 |
| 68 | Worcester County | USA-Massachusetts Massachusetts | Worcester | 866.866 | 4.090 |
| 69 | Middlesex County | USA-New Jersey New Jersey | New Brunswick | 863.623 | 835 |
| 70 | Essex County | USA-New Jersey New Jersey | Newark | 851.117 | 336 |
| 71 | Snohomish County | USA-Washington Washington | Everett | 844.761 | 5.689 |
| 72 | Baltimore County | USA-Maryland Maryland | Towson | 844.703 | 1.766 |
| 73 | Lee County | USA-Florida Florida | Fort Myers | 834.573 | 3.139 |
| 74 | Ventura County | USA-Kalifornien Kalifornien | Ventura | 829.590 | 5.719 |
| 75 | Hamilton County | USA-Ohio Ohio | Cincinnati | 827.058 | 1.069 |
| 76 | Polk County | USA-Florida Florida | Bartow | 818.330 | 5.206 |
| 77 | Essex County | USA-Massachusetts Massachusetts | Salem und Lawrence | 810.089 | 2.146 |
| 78 | San Francisco County | USA-Kalifornien Kalifornien | San Francisco | 808.988 | 121 |
| 79 | Oklahoma County | USA-Oklahoma Oklahoma | Oklahoma City | 808.866 | 1.860 |
| 80 | San Joaquin County | USA-Kalifornien Kalifornien | Stockton | 800.965 | 3.694 |
| 81 | Multnomah County | USA-Oregon Oregon | Portland | 789.698 | 1.206 |
| 82 | Cobb County | USA-Georgia Georgia | Marietta | 776.743 | 881 |
| 83 | Jefferson County | USA-Kentucky Kentucky | Louisville | 772.144 | 1.032 |
| 84 | Suffolk County | USA-Massachusetts Massachusetts | Boston | 768.425 | 311 |
| 85 | DeKalb County | USA-Georgia Georgia | Decatur | 762.992 | 702 |
| 86 | Monroe County | USA-New York New York | Rochester | 748.482 | 3.537 |
| 87 | El Paso County | USA-Colorado Colorado | Colorado Springs | 744.215 | 5.516 |
| 88 | Norfolk County | USA-Massachusetts Massachusetts | Dedham | 727.473 | 1.150 |
| 89 | San Mateo County | USA-Kalifornien Kalifornien | Redwood City | 726.353 | 1.919 |
| 90 | Utah County | USA-Utah Utah | keiner | 719.174 | 1.944 |
| 91 | Jackson County | USA-Missouri Missouri | Kansas City und Independence | 718.560 | 1.596 |
| 92 | Denver County | USA-Colorado Colorado | Denver | 716.577 | 401 |
| 93 | Davidson County | USA-Tennessee Tennessee | Nashville | 712.334 | 1.363 |
| 94 | Montgomery County | USA-Texas Texas | Conroe | 711.354 | 3.027 |
| 95 | Lake County | USA-Illinois Illinois | Waukegan | 708.760 | 3.543 |
| 96 | Hudson County | USA-New Jersey New Jersey | Jersey City | 705.472 | 162 |
| 97 | Will County | USA-Illinois Illinois | Joliet | 700.728 | 2.200 |
| 98 | Williamson County | USA-Texas Texas | Georgetown | 697.191 | 2.233 |
| 99 | Tulsa County | USA-Oklahoma Oklahoma | Tulsa | 682.868 | 2.911 |
| 100 | Bernalillo County | USA-New Mexico New Mexico | Albuquerque | 671.586 | 3.008 |

## Liste der 10 größten Planning Regions, Boroughs, Unorganized Boroughs, Parishes und Bundesbezirke

| Rang | Name | Verwaltungseinheit | Bundesstaat | Verwaltungszentrum | Einwohner | Größe [km²] |
| 1 | Capitol Planning Region | Planning Region | USA-Connecticut Connecticut | keines | 975.328 | 2.661 |
| 2 | Washington, D.C. | Bundesbezirk | USA-District of Columbia District of Columbia | Washington, D.C. | 678.972 | 177 |
| 3 | Western Connecticut | Planning Region | USA-Connecticut Connecticut | keines | 623.907 | 1.378 |
| 4 | South Central Connecticut | Planning Region | USA-Connecticut Connecticut | keines | 568.158 | 951 |
| 5 | East Baton Rouge Parish | Parish | USA-Louisiana Louisiana | Baton Rouge | 448.467 | 1.220 |
| 6 | Jefferson Parish | Parish | USA-Louisiana Louisiana | Gretna | 421.777 | 1.663 |
| 7 | Orleans Parish | Parish | USA-Louisiana Louisiana | New Orleans | 364.136 | 907 |
| 8 | Naugatuck Valley | Planning Region | USA-Connecticut Connecticut | keines | 456.128 | 1.069 |
| 9 | Greater Bridgeport | Planning Region | USA-Connecticut Connecticut | keines | 327.651 | 363 |
| 10 | Anchorage | Borough | USA-Alaska Alaska | Anchorage | 286.075 | 5.079 |