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Large counties in the United States by population

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Ballotpedia provides in-depth coverage of all counties that overlap with the 100 largest cities by population in the United States. This page lists those counties by population in descending order. Note that some large counties in the United States are not listed because they do not overlap with one of the 100 largest cities and therefore are not within Ballotpedia's coverage scope.

Ballotpedia's county coverage

Local government receives only the most basic media coverage despite the fact that the decisions of local officials frequently have the most significant day-to-day impact on citizens of any level of government. Our editorial approach is to identify and fill gaps in the coverage of local politics across the United States to the extent that our resources allow. This requires prioritization of larger municipalities. Over time, we intend to expand our coverage scope.

Counties covered By Ballotpedia
County Population (2020) Ballot measures? Largest cities Elections in 2025?
Los Angeles County, California 10,014,009 Yes Long Beach, Los Angeles, Santa Clarita No
Cook County, Illinois 5,275,541 No Chicago No
Harris County, Texas 4,731,145 Yes Houston Yes
Maricopa County, Arizona 4,420,568 Yes Chandler, Gilbert, Glendale, Mesa, Phoenix, Scottsdale No
San Diego County, California 3,298,634 Yes Chula Vista, San Diego Yes
Orange County, California 3,186,989 Yes Anaheim, Irvine, Santa Ana No
Kings County, New York 2,736,074 Yes New York City Yes
Miami-Dade County, Florida 2,701,767 Yes Hialeah, Miami No
Dallas County, Texas 2,613,539 Yes Dallas, Garland, Irving No
Riverside County, California 2,418,185 Yes Riverside No
Queens County, New York 2,405,464 Yes New York City Yes
King County, Washington 2,269,675 Yes Seattle Yes
Clark County, Nevada 2,265,461 Yes Henderson, Las Vegas, North Las Vegas No
Tarrant County, Texas 2,110,640 Yes Arlington, Fort Worth Yes
Bexar County, Texas 2,009,324 Yes San Antonio Yes
Santa Clara County, California 1,936,259 Yes San Jose Yes
Wayne County, Michigan 1,793,561 - Detroit No
New York County, New York 1,694,251 Yes New York City Yes
Alameda County, California 1,682,353 Yes Oakland, Fremont No
Philadelphia County, Pennsylvania 1,603,797 Yes Philadelphia No
Sacramento County, California 1,585,055 Yes Sacramento No
Bronx County, New York 1,472,654 Yes New York City Yes
Hillsborough County, Florida 1,459,762 Yes Tampa No
Orange County, Florida 1,429,908 Yes Orlando No
Franklin County, Ohio 1,323,807 Yes Columbus Yes
Travis County, Texas 1,290,188 Yes Austin Yes
Hennepin County, Minnesota 1,281,565 - Minneapolis No
Cuyahoga County, Ohio 1,264,817 Yes Cleveland No
Allegheny County, Pennsylvania 1,250,578 Yes Pittsburgh Yes
Wake County, North Carolina 1,129,410 Yes Raleigh No
Mecklenburg County, North Carolina 1,115,482 Yes Charlotte No
Fulton County, Georgia 1,066,710 Yes Atlanta No
Collin County, Texas 1,064,465 Yes Dallas, Garland, Plano Yes
Pima County, Arizona 1,043,433 Yes Tucson No
Honolulu County, Hawaii 1,016,508 Yes Honolulu No
Fresno County, California 1,008,654 Yes Fresno No
Duval County, Florida 995,567 Yes Jacksonville No
Marion County, Indiana 977,203 No Indianapolis No
Pinellas County, Florida 959,107 Yes St. Petersburg No
Erie County, New York 954,236 No Buffalo Yes
Milwaukee County, Wisconsin 939,489 Yes Milwaukee Yes
Shelby County, Tennessee 929,744 Yes Memphis No
Kern County, California 909,235 Yes Bakersfield No
Denton County, Texas 906,422 Yes Dallas, Fort Worth, Plano No
San Francisco County, California 873,965 Yes San Francisco No
El Paso County, Texas 865,657 Yes El Paso Yes
Essex County, New Jersey 863,728 Yes Newark Yes
Hamilton County, Ohio 830,639 Yes Cincinnati Yes
Fort Bend County, Texas 822,779 Yes Houston No
Multnomah County, Oregon 815,428 Yes Portland Yes
Suffolk County, Massachusetts 797,936 - Boston No
Oklahoma County, Oklahoma 796,292 Yes Oklahoma City Yes
Jefferson County, Kentucky 782,969 No Louisville No
DeKalb County, Georgia 764,382 Yes Atlanta No
El Paso County, Colorado 730,395 Yes Colorado Springs No
Hudson County, New Jersey 724,854 Yes Jersey City Yes
Jackson County, Missouri 717,204 Yes Kansas City No
Davidson County, Tennessee 715,884 Yes Nashville No
Denver County, Colorado 715,522 Yes Denver No
Bernalillo County, New Mexico 676,444 Yes Albuquerque Yes
Tulsa County, Oklahoma 669,279 Yes Tulsa Yes
Arapahoe County, Colorado 655,070 Yes Aurora No
Williamson County, Texas 609,017 Yes Austin No
Douglas County, Nebraska 584,526 Yes Omaha No
Dane County, Wisconsin 561,504 Yes Madison Yes
Ramsey County, Minnesota 552,352 Yes St. Paul Yes
Guilford County, North Carolina 541,299 Yes Greensboro Yes
Spokane County, Washington 539,339 Yes Spokane No
Sedgwick County, Kansas 523,824 Yes Wichita No
Adams County, Colorado 519,572 Yes Aurora No
Richmond County, New York 495,747 Yes New York City Yes
Ada County, Idaho 494,967 Yes Boise No
Washoe County, Nevada 486,492 Yes Reno No
East Baton Rouge Parish, Louisiana 456,781 Yes Baton Rouge No
Lucas County, Ohio 431,279 Yes Toledo Yes
Allen County, Indiana 385,410 No Fort Wayne No
Orleans Parish, Louisiana 383,997 Yes New Orleans No
Forsyth County, North Carolina 382,590 Yes Winston-Salem No
Nueces County, Texas 353,178 Yes Corpus Christi No
Durham County, North Carolina 324,833 Yes Durham, Raleigh No
Lancaster County, Nebraska 322,608 Yes Lincoln No
Fayette County, Kentucky 322,570 Yes Lexington No
Lubbock County, Texas 310,639 Yes Lubbock No
Cleveland County, Oklahoma 295,528 Yes Oklahoma City No
Anchorage, Alaska 291,247 Yes Anchorage No
Webb County, Texas 267,114 Yes Laredo No
Clay County, Missouri 253,335 No Kansas City No
Fairfield County, Ohio 158,921 Yes Columbus Yes
Canadian County, Oklahoma 154,405 Yes Oklahoma City No
Platte County, Missouri 106,718 No Kansas City No
Osage County, Oklahoma 45,818 Yes Tulsa Yes

See also

Local Politics 2025 Election Analysis
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Municipal government
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Municipal elections, 2025
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Footnotes