List of the most populous counties by U.S. state
The following is a sortable table of the most populous county in each U.S. state and territory. Counties in bold have a population of at least 1 million.
Table
State |
Largest county/parish/municipality |
Population (2013 estimate) |
County/parish seat or shire town |
Alabama | Jefferson | 659,479 | Birmingham |
Alaska | Anchorage | 300,950 | Anchorage |
Arizona | Maricopa | 4,009,412 | Phoenix |
Arkansas | Pulaski | 391,284 | Little Rock |
California | Los Angeles | 10,017,068 | Los Angeles |
Colorado | El Paso | 655,044 | Colorado Springs |
Connecticut | Fairfield | 939,904 | Bridgeport |
Delaware | New Castle | 549,684 | Wilmington |
Florida | Miami-Dade | 2,617,176 | Miami |
Georgia | Fulton | 984,293 | Atlanta |
Hawaii | Honolulu | 983,429 | Honolulu |
Idaho | Ada | 416,464 | Boise |
Illinois | Cook | 5,240,700 | Chicago |
Indiana | Marion | 928,281 | Indianapolis |
Iowa | Polk | 451,677 | Des Moines |
Kansas | Johnson | 566,933 | Olathe |
Kentucky | Jefferson | 756,832 | Louisville |
Louisiana | East Baton Rouge | 445,227 | Baton Rouge |
Maine | Cumberland | 285,456 | Portland |
Maryland | Montgomery | 1,016,677 | Rockville |
Massachusetts | Middlesex | 1,552,802 | Cambridge and Lowell |
Michigan | Wayne | 1,775,273 | Detroit |
Minnesota | Hennepin | 1,198,778 | Minneapolis |
Mississippi | Hinds | 244,899 | Jackson |
Missouri | St. Louis County | 1,001,444 | Clayton |
Montana | Yellowstone | 154,162 | Billings |
Nebraska | Douglas | 531,265 | Omaha |
Nevada | Clark | 2,027,868 | Las Vegas |
New Hampshire | Hillsborough | 402,922 | Manchester and Nashua |
New Jersey | Bergen | 925,328 | Hackensack |
New Mexico | Bernalillo | 673,460 | Albuquerque |
New York | Kings | 2,592,149 | Brooklyn |
North Carolina | Mecklenburg | 990,977 | Charlotte |
North Dakota | Cass | 162,829 | Fargo |
Ohio | Cuyahoga | 1,268,154 | Cleveland |
Oklahoma | Oklahoma | 755,245 | Oklahoma City |
Oregon | Multnomah | 759,256 | Portland |
Pennsylvania | Philadelphia | 1,553,165 | Philadelphia |
Rhode Island | Providence | 628,323 | Providence |
South Carolina | Greenville | 474,266 | Greenville |
South Dakota | Minnehaha | 179,640 | Sioux Falls |
Tennessee | Shelby | 940,764 | Memphis |
Texas | Harris | 4,336,853 | Houston |
Utah | Salt Lake | 1,063,842 | Salt Lake City |
Vermont | Chittenden | 158,504 | Burlington |
Virginia | Fairfax | 1,116,897 | Fairfax |
Washington | King | 2,044,449 | Seattle |
West Virginia | Kanawha | 191,275 | Charleston |
Wisconsin | Milwaukee | 956,023 | Milwaukee |
Wyoming | Laramie | 95,809 | Cheyenne |
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