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 2017, 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 | 10.163.507 | 12.308 |
| 2 | Cook County | USA-Illinois Illinois | Chicago | 5.211.263 | 4.235 |
| 3 | Harris County | USA-Texas Texas | Houston | 4.652.980 | 4.604 |
| 4 | Maricopa County | USA-Arizona Arizona | Phoenix | 4.307.033 | 23.891 |
| 5 | San Diego County | USA-Kalifornien Kalifornien | San Diego | 3.337.685 | 11.721 |
| 6 | Orange County | USA-Kalifornien Kalifornien | Santa Ana | 3.190.400 | 2.455 |
| 7 | Miami-Dade County | USA-Florida Florida | Miami | 2.751.796 | 6.297 |
| 8 | Brooklyn County | USA-New York New York | keiner | 2.648.771 | 251 |
| 9 | Dallas County | USA-Texas Texas | Dallas | 2.618.148 | 2.353 |
| 10 | Riverside County | USA-Kalifornien Kalifornien | Riverside | 2.423.266 | 18.915 |
| 11 | Queens County | USA-New York New York | keiner | 2.358.582 | 462 |
| 12 | Clark County | USA-Nevada Nevada | Las Vegas | 2.204.079 | 20.955 |
| 13 | King County | USA-Washington Washington | Seattle | 2.188.649 | 5.974 |
| 14 | San Bernardino County | USA-Kalifornien Kalifornien | San Bernardino | 2.157.404 | 52.073 |
| 15 | Tarrant County | USA-Texas Texas | Fort Worth | 2.054.475 | 2.324 |
| 16 | Bexar County | USA-Texas Texas | San Antonio | 1.958.578 | 3.255 |
| 17 | Santa Clara County | USA-Kalifornien Kalifornien | San José | 1.938.153 | 3.377 |
| 18 | Broward County | USA-Florida Florida | Fort Lauderdale | 1.935.878 | 3.418 |
| 19 | Wayne County | USA-Michigan Michigan | Detroit | 1.753.616 | 1.741 |
| 20 | Manhattan County | USA-New York New York | keiner | 1.664.727 | 88 |
| 21 | Alameda County | USA-Kalifornien Kalifornien | Oakland | 1.663.190 | 2.127 |
| 22 | Middlesex County | USA-Massachusetts Massachusetts | Cambridge und Lowell | 1.602.947 | 2.195 |
| 23 | Philadelphia County | USA-Pennsylvania Pennsylvania | Philadelphia | 1.580.863 | 369 |
| 24 | Sacramento County | USA-Kalifornien Kalifornien | Sacramento | 1.530.615 | 2.578 |
| 25 | Suffolk County | USA-New York New York | Riverhead | 1.492.953 | 6.146 |
| 26 | Bronx County | USA-New York New York | keiner | 1.471.160 | 149 |
| 27 | Palm Beach County | USA-Florida Florida | West Palm Beach | 1.471.150 | 6.181 |
| 28 | Hillsborough County | USA-Florida Florida | Tampa | 1.408.566 | 3.279 |
| 29 | Nassau County | USA-New York New York | Mineola | 1.369.514 | 1.173 |
| 30 | Orange County | USA-Florida Florida | Orlando | 1.348.975 | 2.601 |
| 31 | Franklin County | USA-Ohio Ohio | Columbus | 1.291.981 | 1.408 |
| 32 | Hennepin County | USA-Minnesota Minnesota | Minneapolis | 1.252.024 | 1.571 |
| 33 | Oakland County | USA-Michigan Michigan | Pontiac | 1.250.836 | 2.532 |
| 34 | Cuyahoga County | USA-Ohio Ohio | Cleveland | 1.248.514 | 3.226 |
| 35 | Travis County | USA-Texas Texas | Austin | 1.226.698 | 2.650 |
| 36 | Allegheny County | USA-Pennsylvania Pennsylvania | Pittsburgh | 1.223.048 | 1.929 |
| 37 | Contra Costa County | USA-Kalifornien Kalifornien | Martinez | 1.147.439 | 2.078 |
| 38 | Fairfax County | USA-Virginia Virginia | Fairfax | 1.148.433 | 1.053 |
| 39 | Salt Lake County | USA-Utah Utah | Salt Lake City | 1.135.649 | 2.092 |
| 40 | Mecklenburg County | USA-North Carolina North Carolina | Charlotte | 1.076.837 | 1.415 |
| 41 | Wake County | USA-North Carolina North Carolina | Raleigh | 1.072.203 | 2.220 |
| 42 | Montgomery County | USA-Maryland Maryland | Rockville | 1.058.810 | 1.313 |
| 43 | Fulton County | USA-Georgia Georgia | Atlanta | 1.041.423 | 1.385 |
| 44 | Pima County | USA-Arizona Arizona | Tucson | 1.022.769 | 23.799 |
| 45 | St. Louis County | USA-Missouri Missouri | Clayton | 996.726 | 1.356 |
| 46 | Fresno County | USA-Kalifornien Kalifornien | Fresno | 989.255 | 15.585 |
| 47 | Honolulu City and County | USA-Hawaii Hawaii | Honolulu | 988.650 | 5.509 |
| 48 | Westchester County | USA-New York New York | White Plains | 980.244 | 1.295 |
| 49 | Pinellas County | USA-Florida Florida | Clearwater | 970.637 | 1.574 |
| 50 | Collin County | USA-Texas Texas | McKinney | 969.603 | 2.294 |
| 51 | Milwaukee County | USA-Wisconsin Wisconsin | Milwaukee | 952.085 | 3.081 |
| 52 | Marion County | USA-Indiana Indiana | Indianapolis | 950.082 | 1.044 |
| 53 | Fairfield County | USA-Connecticut Connecticut | keiner | 949.921 | 2.168 |
| 54 | Bergen County | USA-New Jersey New Jersey | Hackensack | 948.406 | 639 |
| 55 | Duval County | USA-Florida Florida | Jacksonville | 937.934 | 2.378 |
| 56 | Shelby County | USA-Tennessee Tennessee | Memphis | 936.961 | 2.030 |
| 57 | DuPage County | USA-Illinois Illinois | Wheaton | 930.128 | 872 |
| 58 | Erie County | USA-New York New York | Buffalo | 925.528 | 3.178 |
| 59 | Gwinnett County | USA-Georgia Georgia | Lawrenceville | 920.260 | 1.131 |
| 60 | Prince George’s County | USA-Maryland Maryland | Upper Marlboro | 912.756 | 1.291 |
| 61 | Hartford County | USA-Connecticut Connecticut | keiner | 895.388 | 1.944 |
| 62 | Kern County | USA-Kalifornien Kalifornien | Bakersfield | 893.119 | 21.138 |
| 63 | San Francisco County | USA-Kalifornien Kalifornien | San Francisco | 884.363 | 121 |
| 64 | Pierce County | USA-Washington Washington | Tacoma | 876.764 | 4.679 |
| 65 | Macomb County | USA-Michigan Michigan | Mount Clemens | 871.375 | 1.476 |
| 66 | Hidalgo County | USA-Texas Texas | Edinburg | 860.661 | 4.099 |
| 67 | New Haven County | USA-Connecticut Connecticut | keiner | 860.435 | 2.233 |
| 68 | Ventura County | USA-Kalifornien Kalifornien | Ventura | 854.223 | 5.719 |
| 69 | Middlesex County | USA-New Jersey New Jersey | New Brunswick | 842.798 | 835 |
| 70 | El Paso County | USA-Texas Texas | El Paso | 840.410 | 2.628 |
| 71 | Denton County | USA-Texas Texas | Denton | 836.210 | 2.481 |
| 72 | Baltimore County | USA-Maryland Maryland | Towson | 832.468 | 1.766 |
| 73 | Worcester County | USA-Massachusetts Massachusetts | Worcester | 826.116 | 4.090 |
| 74 | Montgomery County | USA-Pennsylvania Pennsylvania | Norristown | 826.075 | 1.262 |
| 75 | Hamilton County | USA-Ohio Ohio | Cincinnati | 813.822 | 1.069 |
| 76 | Essex County | USA-New Jersey New Jersey | Newark | 808.285 | 336 |
| 77 | Multnomah County | USA-Oregon Oregon | Portland | 807.555 | 1.206 |
| 78 | Snohomish County | USA-Washington Washington | Everett | 801.633 | 5.689 |
| 79 | Suffolk County | USA-Massachusetts Massachusetts | Boston | 797.939 | 311 |
| 80 | Oklahoma County | USA-Oklahoma Oklahoma | Oklahoma City | 787.958 | 1.860 |
| 81 | Essex County | USA-Massachusetts Massachusetts | Salem und Lawrence | 785.205 | 2.146 |
| 82 | San Mateo County | USA-Kalifornien Kalifornien | Redwood City | 771.410 | 1.919 |
| 83 | Jefferson County | USA-Kentucky Kentucky | Louisville | 771.158 | 1.032 |
| 84 | Fort Bend County | USA-Texas Texas | Richmond | 764.828 | 2.265 |
| 85 | Cobb County | USA-Georgia Georgia | Marietta | 755.754 | 881 |
| 86 | DeKalb County | USA-Georgia Georgia | Decatur | 753.253 | 702 |
| 87 | Monroe County | USA-New York New York | Rochester | 747.642 | 3.537 |
| 88 | San Joaquin County | USA-Kalifornien Kalifornien | Stockton | 745.424 | 3.694 |
| 89 | Lee County | USA-Florida Florida | Fort Myers | 739.224 | 3.139 |
| 90 | Denver County | USA-Colorado Colorado | Denver | 704.621 | 401 |
| 91 | Lake County | USA-Illinois Illinois | Waukegan | 703.520 | 3.543 |
| 92 | Norfolk County | USA-Massachusetts Massachusetts | Dedham | 700.322 | 1.150 |
| 93 | El Paso County | USA-Colorado Colorado | Colorado Springs | 699.232 | 5.516 |
| 94 | Jackson County | USA-Missouri Missouri | Kansas City und Independence | 698.895 | 1.596 |
| 95 | Will County | USA-Illinois Illinois | Joliet | 692.661 | 2.200 |
| 96 | Hudson County | USA-New Jersey New Jersey | Jersey City | 691.643 | 162 |
| 97 | Davidson County | USA-Tennessee Tennessee | Nashville | 691.243 | 1.363 |
| 98 | Polk County | USA-Florida Florida | Bartow | 686.483 | 5.206 |
| 99 | Bernalillo County | USA-New Mexico New Mexico | Albuquerque | 676.773 | 3.027 |
| 100 | Jefferson County | USA-Alabama Alabama | Birmingham | 659.197 | 2.911 |

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

| Rang | Name | Verwaltungseinheit | Bundesstaat | Verwaltungszentrum | Einwohner | Größe [km²] |
| - | - | - | - | - | - | - |
| 1 | Washington, D.C. | Bundesbezirk | USA-District of Columbia District of Columbia | Washington, D.C. | 693.972 | 177 |
| 2 | East Baton Rouge Parish | Parish | USA-Louisiana Louisiana | Baton Rouge | 446.268 | 1.220 |
| 3 | Jefferson Parish | Parish | USA-Louisiana Louisiana | Gretna | 439.036 | 1.663 |
| 4 | Orleans Parish | Parish | USA-Louisiana Louisiana | New Orleans | 393.292 | 907 |
| 5 | Anchorage | Borough | USA-Alaska Alaska | Anchorage | 294.356 | 5.079 |
| 6 | St. Tammany Parish | Parish | USA-Louisiana Louisiana | Covington | 256.327 | 2.212 |
| 7 | Caddo Parish | Parish | USA-Louisiana Louisiana | Shreveport | 246.581 | 2.427 |
| 8 | Lafayette Parish | Parish | USA-Louisiana Louisiana | Lafayette | 242.485 | 700 |
| 9 | Calcasieu Parish | Parish | USA-Louisiana Louisiana | Lake Charles | 202.445 | 2.834 |
| 10 | Ouachita Parish | Parish | USA-Louisiana Louisiana | Monroe | 155.874 | 1.639 |
