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Most Populous County in Each State by Population

List the most populous counties in every state by population, in order from most to least.
Populations from U.S. Census Bureau 2019 estimates.
Includes county-equivalents in Louisiana and Alaska.
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fowlereid
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Last updated: February 28, 2021
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First submittedFebruary 28, 2021
Times taken15
Average score52.0%
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State/Population
County
California (10,039,107)
Los Angeles
Illinois (5,150,233)
Cook
Texas (4,698,619)
Harris
Arizona (4,485,414)
Maricopa
Florida (2,716,940)
Miami-Dade
New York (2,559,903)
Kings
Nevada (2,266,715)
Clark
Washington (2,252,782)
King
Michigan (1,749,343)
Wayne
Massachusetts (1,611,699)
Middlesex
Pennsylvania (1,584,064)
Philadelphia
Ohio (1,316,756)
Franklin
Minnesota (1,278,869)
Hennepin
Utah (1,160,437)
Salt Lake
Virginia (1,147,532)
Fairfax
North Carolina (1,111,761)
Wake
Georgia (1,063,937)
Fulton
Maryland (1,050,688)
Montgomery
Missouri (994,205)
St. Louis
Hawaii (974,563)
Honolulu
Indiana (964,582)
Marion
Wisconsin (945,726)
Milwaukee
Connecticut (943,332)
Fairfield
Tennessee (937,166)
Shelby
New Jersey (932,202)
Bergen
Oregon (812,855)
Multnomah
Oklahoma (797,434)
Oklahoma
Kentucky (766,757)
Jefferson
Colorado (720,403)
El Paso
New Mexico (679,121)
Bernalillo
Alabama (658,573)
Jefferson
Rhode Island (638,931)
Providence
Kansas (602,401)
Johnson
Nebraska (571,327)
Douglas
Delaware (558,753)
New Castle
South Carolina (523,542)
Greenville
Iowa (490,161)
Polk
Idaho (481,587)
Ada
Louisiana (440,059)
East Baton Rouge
New Hampshire (417,025)
Hillsborough
Arkansas (391,911)
Pulaski
Maine (295,003)
Cumberland
Alaska (293,531)
Anchorage
Mississippi (231,840)
Hinds
South Dakota (193,134)
Minnehaha
North Dakota (181,923)
Cass
West Virginia (178,124)
Kanawha
Vermont (163,774)
Chittenden
Montana (161,300)
Yellowstone
Wyoming (99,500)
Laramie
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