US County Populations 2024

400 counties*

County
State
2024 Pop.
2020 Pop.
Change (2020)
Los Angeles CountyCalifornia9,606,9259,992,813-3.86%
Cook CountyIllinois5,062,5785,263,608-3.82%
Harris CountyTexas4,888,9134,734,7923.26%
Maricopa CountyArizona4,615,9094,445,0593.84%
San Diego CountyCalifornia3,262,7703,295,298-0.99%
Orange CountyCalifornia3,121,1383,185,734-2.03%
Miami-Dade CountyFlorida2,700,6782,695,6850.19%
Dallas CountyTexas2,610,7232,610,1120.02%
Kings CountyNew York2,532,9192,718,447-6.82%
Riverside CountyCalifornia2,510,6432,422,9933.62%
Clark CountyNevada2,350,6112,274,8873.33%
King CountyWashington2,277,4492,274,2820.14%
Queens CountyNew York2,225,8342,388,864-6.82%
Tarrant CountyTexas2,210,2482,115,8404.46%
San Bernardino CountyCalifornia2,196,3142,183,3910.59%
Bexar CountyTexas2,115,1672,015,5014.94%
Broward CountyFlorida1,978,1731,943,3981.79%
Santa Clara CountyCalifornia1,876,8491,931,168-2.81%
Wayne CountyMichigan1,743,3961,789,586-2.58%
Middlesex CountyMassachusetts1,631,1101,628,2350.18%
Alameda CountyCalifornia1,616,1171,680,466-3.83%
New York CountyNew York1,600,3591,677,232-4.58%
Sacramento CountyCalifornia1,584,1961,586,566-0.15%
Hillsborough CountyFlorida1,557,6551,466,2556.23%
Palm Beach CountyFlorida1,547,7351,494,2823.58%
Philadelphia CountyPennsylvania1,534,2481,600,684-4.15%
Suffolk CountyNew York1,518,3661,522,064-0.24%
Orange CountyFlorida1,491,0711,431,6794.15%
Nassau CountyNew York1,378,1361,390,491-0.89%
Travis CountyTexas1,342,3721,296,6133.53%
Bronx CountyNew York1,331,1441,461,151-8.9%
Franklin CountyOhio1,330,3961,324,4410.45%
Oakland CountyMichigan1,269,8271,272,493-0.21%
Hennepin CountyMinnesota1,260,3601,281,649-1.66%
Collin CountyTexas1,231,7231,075,73614.5%
Cuyahoga CountyOhio1,229,1821,262,573-2.64%
Allegheny CountyPennsylvania1,217,0451,249,565-2.6%
Wake CountyNorth Carolina1,209,7721,130,4837.01%
Salt Lake CountyUtah1,185,0571,186,983-0.16%
Mecklenburg CountyNorth Carolina1,183,3271,117,4235.9%
Contra Costa CountyCalifornia1,153,0311,166,069-1.12%
Fairfax CountyVirginia1,144,4471,148,627-0.36%
Fulton CountyGeorgia1,084,5121,069,3941.41%
Pima CountyArizona1,068,8481,045,1752.26%
Montgomery CountyMaryland1,063,8811,060,9040.28%
Duval CountyFlorida1,044,633997,7844.7%
Denton CountyTexas1,037,646914,39813.48%
Fresno CountyCalifornia1,018,9651,009,5520.93%
Gwinnett CountyGeorgia990,879958,3593.39%
Westchester CountyNew York989,8981,001,453-1.15%
Honolulu CountyHawaii983,9881,012,399-2.81%
St. Louis CountyMissouri983,3271,003,130-1.97%
Capitol Planning RegionConnecticut978,588962,4361.68%
Marion CountyIndiana967,697976,659-0.92%
Bergen CountyNew Jersey961,932953,6900.86%
Pinellas CountyFlorida961,400959,7930.17%
Prince George's CountyMaryland947,880965,365-1.81%
Fort Bend CountyTexas944,637829,10913.93%
Erie CountyNew York943,871952,342-0.89%
Pierce CountyWashington930,913923,5890.79%
DuPage CountyIllinois920,762931,317-1.13%
Milwaukee CountyWisconsin914,332938,550-2.58%
Kern CountyCalifornia910,889905,9100.55%
Hidalgo CountyTexas908,656872,8564.1%
Shelby CountyTennessee903,727929,763-2.8%
Macomb CountyMichigan875,967880,238-0.49%
El Paso CountyTexas872,521866,6060.68%
Montgomery CountyPennsylvania872,440856,9981.8%
Worcester CountyMassachusetts870,859859,6691.3%
Middlesex CountyNew Jersey866,152861,4080.55%
Essex CountyNew Jersey852,510859,974-0.87%
Snohomish CountyWashington849,070829,9332.31%
Polk CountyFlorida848,278730,15816.18%
Lee CountyFlorida846,755765,54710.61%
Baltimore CountyMaryland843,420853,387-1.17%
Hamilton CountyOhio829,395830,377-0.12%
Ventura CountyCalifornia826,309843,371-2.02%
Oklahoma CountyOklahoma814,629798,2412.05%
Essex CountyMassachusetts813,679807,7910.73%
San Francisco CountyCalifornia810,202870,518-6.93%
San Joaquin CountyCalifornia807,637780,6173.46%
Multnomah CountyOregon784,833816,514-3.88%
Cobb CountyGeorgia781,646766,3781.99%
Jefferson CountyKentucky771,193782,845-1.49%
Suffolk CountyMassachusetts768,038797,181-3.66%
DeKalb CountyGeorgia764,205764,489-0.04%
El Paso CountyColorado747,834732,3842.11%
Monroe CountyNew York746,077757,551-1.51%
Montgomery CountyTexas743,154625,29118.85%
Utah CountyUtah735,656663,59510.86%
Norfolk CountyMassachusetts729,477724,5540.68%
San Mateo CountyCalifornia723,777762,479-5.08%
Williamson CountyTexas722,109615,55217.31%
Jackson CountyMissouri720,902717,6150.46%
Denver CountyColorado719,701717,6060.29%
Davidson CountyTennessee717,317716,0590.18%
Hudson CountyNew Jersey708,563721,879-1.84%
Lake CountyIllinois707,621713,281-0.79%
Will CountyIllinois703,410696,8260.94%
Tulsa CountyOklahoma688,675670,7022.68%
District of ColumbiaDistrict of Columbia686,995670,8392.41%
Bernalillo CountyNew Mexico670,215676,853-0.98%
Providence CountyRhode Island663,806659,9630.58%
Kent CountyMichigan663,788658,4920.8%
Ocean CountyNew Jersey662,731638,4653.8%
Jefferson CountyAlabama660,706674,717-2.08%
Brevard CountyFlorida657,251608,7757.96%
Pasco CountyFlorida656,851566,15616.02%
Arapahoe CountyColorado655,853655,2720.09%
Bucks CountyPennsylvania646,411646,1730.04%
Monmouth CountyNew Jersey641,370642,836-0.23%
Johnson CountyKansas625,383611,1492.33%
Western CT Planning RegionConnecticut624,957618,3681.07%
Volusia CountyFlorida601,049555,7768.15%
Washington CountyOregon597,644601,130-0.58%
Anne Arundel CountyMaryland595,817589,1061.14%
Douglas CountyNebraska592,974585,4311.29%
Bristol CountyMassachusetts583,938576,7721.24%
Dane CountyWisconsin582,936562,6153.61%
New Castle CountyDelaware581,930570,9181.93%
Delaware CountyPennsylvania577,567576,3560.21%
Jefferson CountyColorado576,921583,081-1.06%
Union CountyNew Jersey575,035573,6600.24%
Greenville CountySouth Carolina568,227527,2497.77%
South Central CT Planning RegionConnecticut567,914564,0760.68%
Baltimore cityMaryland561,371583,157-3.74%
Lancaster CountyPennsylvania560,518552,8211.39%
Guilford CountyNorth Carolina553,275539,3212.59%
Spokane CountyWashington553,170541,1752.22%
Chester CountyPennsylvania552,930534,8303.38%
Stanislaus CountyCalifornia551,634553,257-0.29%
Adams CountyColorado539,221520,5003.6%
Plymouth CountyMassachusetts537,368530,2001.35%
Summit CountyOhio535,697539,821-0.76%
Ramsey CountyMinnesota534,847551,716-3.06%
Montgomery CountyOhio534,118537,119-0.56%
Sedgwick CountyKansas531,570524,8211.29%
Ada CountyIdaho530,342498,2786.43%
Camden CountyNew Jersey529,743523,1221.27%
Clark CountyWashington525,563505,3384%
Morris CountyNew Jersey517,627508,4391.81%
Kane CountyIllinois515,825516,181-0.07%
Passaic CountyNew Jersey513,156523,439-1.96%
Polk CountyIowa509,326493,0223.31%
Knox CountyTennessee505,958480,5165.29%
Pinal CountyArizona503,441430,18717.03%
Lake CountyIndiana501,539498,9570.52%
Washoe CountyNevada499,064487,7102.33%
Prince William CountyVirginia492,268482,8341.95%
Richmond CountyNew York490,016494,598-0.93%
Seminole CountyFlorida489,919471,4553.92%
Tulare CountyCalifornia481,052473,9141.51%
Sonoma CountyCalifornia480,955488,282-1.5%
Sarasota CountyFlorida475,474436,2378.99%
Burlington CountyNew Jersey472,233461,6822.29%
York CountyPennsylvania468,231456,7202.52%
Onondaga CountyNew York466,018474,192-1.72%
Hampden CountyMassachusetts459,824464,311-0.97%
Naugatuck Valley Planning RegionConnecticut458,666449,2852.09%
Osceola CountyFlorida453,025391,14115.82%
Manatee CountyFlorida453,021401,61912.8%
Virginia Beach cityVirginia452,229459,684-1.62%
Dakota CountyMinnesota451,608440,4232.54%
Solano CountyCalifornia449,551452,723-0.7%
East Baton Rouge ParishLouisiana446,843455,899-1.99%
Loudoun CountyVirginia439,902422,7054.07%
Lake CountyFlorida438,834386,21613.62%
Santa Barbara CountyCalifornia438,599448,424-2.19%
Berks CountyPennsylvania434,069428,6711.26%
Charleston CountySouth Carolina429,384409,8994.75%
Placer CountyCalifornia429,048405,9275.7%
Richland CountySouth Carolina428,750415,6713.15%
Monterey CountyCalifornia428,562438,322-2.23%
Cameron CountyTexas428,509421,4801.67%
Hillsborough CountyNew Hampshire427,215422,9131.02%
Lucas CountyOhio424,249430,859-1.53%
Marion CountyFlorida423,481377,47212.19%
Clackamas CountyOregon423,228422,4680.18%
Madison CountyAlabama421,595390,5037.96%
St. Charles CountyMissouri419,520406,4173.22%
Jefferson ParishLouisiana417,524439,725-5.05%
Waukesha CountyWisconsin414,909407,4961.82%
Mobile CountyAlabama411,882414,377-0.6%
Horry CountySouth Carolina411,809353,76516.41%
Collier CountyFlorida411,104377,3108.96%
Brazoria CountyTexas409,642373,4939.68%
Orange CountyNew York408,449400,9861.86%
Genesee CountyMichigan401,121405,777-1.15%
Pulaski CountyArkansas400,631399,2740.34%
Bell CountyTexas398,932372,2587.17%
Allen CountyIndiana397,446386,1032.94%
Butler CountyOhio396,358390,8781.4%
Forsyth CountyNorth Carolina396,181383,2023.39%
Douglas CountyColorado391,875360,3238.76%
Chesterfield CountyVirginia389,462365,3116.61%
St. Lucie CountyFlorida388,286331,44117.15%
Hamilton CountyTennessee385,126367,2514.87%
Mercer CountyNew Jersey382,563386,466-1.01%
Lane CountyOregon380,181383,308-0.82%
Lehigh CountyPennsylvania379,234374,5011.26%
Hamilton CountyIndiana377,827348,9968.26%
Davis CountyUtah376,527363,7713.51%
Anoka CountyMinnesota375,774364,4993.09%
Larimer CountyColorado373,965359,9233.9%
Rutherford CountyTennessee373,520343,2988.8%
Stark CountyOhio372,647374,522-0.5%
Weld CountyColorado368,618331,45811.21%
Spartanburg CountySouth Carolina367,448329,37911.56%
Galveston CountyTexas366,101351,5904.13%
Washtenaw CountyMichigan364,568371,834-1.95%
Orleans ParishLouisiana358,355383,241-6.49%
Nueces CountyTexas352,988353,398-0.12%
Somerset CountyNew Jersey350,637344,7541.71%
Westmoreland CountyPennsylvania350,328354,346-1.13%
Marion CountyOregon346,763346,3500.12%
Rockland CountyNew York341,257337,3671.15%
Durham CountyNorth Carolina340,492325,5674.58%
Cumberland CountyNorth Carolina338,999335,4701.05%
Howard CountyMaryland336,636332,8141.15%
Henrico CountyVirginia334,967334,9050.02%
St. Johns CountyFlorida333,148277,09920.23%
Escambia CountyFlorida329,996322,5682.3%
Lancaster CountyNebraska328,998323,1651.8%
Luzerne CountyPennsylvania328,280325,2170.94%
Greater Bridgeport Planning RegionConnecticut328,177324,3871.17%
Boulder CountyColorado326,323330,938-1.39%
Lubbock CountyTexas324,119311,5784.02%
Rockingham CountyNew Hampshire321,745314,6212.26%
Northampton CountyPennsylvania320,282312,7842.4%
Fayette CountyKentucky320,027322,627-0.81%
Lorain CountyOhio319,789313,4982.01%
Benton CountyArkansas319,204286,61811.37%
Albany CountyNew York317,397314,0181.08%
McHenry CountyIllinois314,042309,8821.34%
Lexington CountySouth Carolina313,951295,0476.41%
Cumberland CountyMaine311,623303,5852.65%
Gloucester CountyNew Jersey310,079302,5632.48%
Chatham CountyGeorgia306,285295,0893.79%
Greene CountyMissouri306,025299,3282.24%
Ottawa CountyMichigan305,826296,9073%
Cleveland CountyOklahoma302,902296,2362.25%
York CountySouth Carolina302,439284,0286.48%
Thurston CountyWashington299,367295,9981.14%
Frederick CountyMaryland299,242272,7869.7%
Clayton CountyGeorgia298,201299,439-0.41%
Dutchess CountyNew York296,691295,9010.27%
Leon CountyFlorida296,544293,9550.88%
Merced CountyCalifornia293,630281,8304.19%
Cherokee CountyGeorgia292,010268,1568.9%
Hays CountyTexas291,869243,96819.63%
Dauphin CountyPennsylvania289,781286,7101.07%
Alachua CountyFlorida287,947279,7372.93%
Ingham CountyMichigan285,797284,6750.39%
Anchorage MunicipalityAlaska285,167290,893-1.97%
Washington CountyMinnesota281,703268,3894.96%
San Luis Obispo CountyCalifornia281,232281,884-0.23%
Winnebago CountyIllinois280,302284,916-1.62%
Southeastern CT Planning RegionConnecticut280,011278,3420.6%
Forsyth CountyGeorgia278,462252,90110.11%
Buncombe CountyNorth Carolina278,012269,7023.08%
St. Tammany ParishLouisiana277,929265,0004.88%
Kitsap CountyWashington277,503275,8230.61%
St. Louis cityMissouri277,315300,496-7.71%
Atlantic CountyNew Jersey275,044274,1900.31%
Weber CountyUtah274,392262,9884.34%
St. Joseph CountyIndiana273,414272,6820.27%
Cumberland CountyPennsylvania272,944260,2584.87%
Brown CountyWisconsin272,766268,9511.42%
McLennan CountyTexas271,004261,1933.76%
Webb CountyTexas270,677267,3631.24%
Sussex CountyDelaware270,571238,62913.39%
Williamson CountyTennessee268,182249,5527.47%
Washington CountyArkansas266,416246,7747.96%
Erie CountyPennsylvania266,302270,578-1.58%
Berkeley CountySouth Carolina265,482231,53314.66%
Harford CountyMaryland265,473261,2301.62%
Canyon CountyIdaho264,456233,01313.49%
Union CountyNorth Carolina263,732239,47010.13%
Kalamazoo CountyMichigan263,538261,7960.67%
Clay CountyMissouri262,614254,1373.34%
Madison CountyIllinois261,932265,643-1.4%
Henry CountyGeorgia260,754241,8527.82%
Baldwin CountyAlabama260,483233,22711.69%
Santa Cruz CountyCalifornia258,854270,474-4.3%
Yakima CountyWashington256,267256,733-0.18%
Chesapeake cityVirginia255,313249,7812.21%
Warren CountyOhio254,561243,2284.66%
Marin CountyCalifornia252,660261,306-3.31%
Yavapai CountyArizona251,932237,2176.2%
Lafayette ParishLouisiana251,786242,1453.98%
Jefferson CountyTexas251,391256,133-1.85%
St. Clair CountyIllinois249,771256,844-2.75%
Johnston CountyNorth Carolina249,008217,80814.32%
Smith CountyTexas248,423234,1996.07%
Brazos CountyTexas247,475234,5055.53%
Montgomery CountyTennessee244,845221,28110.65%
Cabarrus CountyNorth Carolina244,123227,2197.44%
New Hanover CountyNorth Carolina241,920226,3266.89%
Gaston CountyNorth Carolina240,514228,5325.24%
Saratoga CountyNew York238,954235,7931.34%
Clay CountyFlorida238,244218,9518.81%
Tuscaloosa CountyAlabama238,056231,5472.81%
Delaware CountyOhio236,746215,16610.03%
Shelby CountyAlabama235,967223,9125.38%
Arlington CountyVirginia234,646238,814-1.75%
Ellis CountyTexas233,335194,31720.08%
Jefferson CountyMissouri233,240226,9372.78%
Whatcom CountyWashington233,240227,4492.55%
Lake CountyOhio231,544232,516-0.42%
Barnstable CountyMassachusetts231,392228,0121.48%
Richmond cityVirginia230,127226,9361.41%
Norfolk cityVirginia229,302237,789-3.57%
Linn CountyIowa229,004230,419-0.61%
Doña Ana CountyNew Mexico226,890220,0603.1%
Oneida CountyNew York226,752231,082-1.87%
Mohave CountyArizona226,459214,1855.73%
Mahoning CountyOhio225,270228,009-1.2%
Caddo ParishLouisiana223,838236,945-5.53%
Montgomery CountyAlabama223,659228,342-2.05%
Hall CountyGeorgia221,913203,4739.06%
Okaloosa CountyFlorida220,464212,0853.95%
York CountyMaine220,222212,2603.75%
Jackson CountyOregon219,867223,620-1.68%
Yolo CountyCalifornia219,070216,2911.28%
Hernando CountyFlorida218,679195,62411.79%
Onslow CountyNorth Carolina218,321207,7575.08%
Benton CountyWashington217,609207,4194.91%
Yuma CountyArizona217,568205,6595.79%
Anderson CountySouth Carolina216,500204,1956.03%
Lackawanna CountyPennsylvania216,496215,5390.44%
Clermont CountyOhio213,265208,7502.16%
Sumner CountyTennessee212,267197,4167.52%
Hinds CountyMississippi212,185226,765-6.43%
Harrison CountyMississippi210,781208,8090.94%
Deschutes CountyOregon210,543199,4645.55%
Washington CountyPennsylvania210,524209,4340.52%
Johnson CountyTexas210,316180,96416.22%
Minnehaha CountySouth Dakota210,015197,6956.23%
Charlotte CountyFlorida209,686187,99511.54%
Hawaii CountyHawaii208,882200,7444.05%
Niagara CountyNew York208,447212,126-1.73%
Santa Rosa CountyFlorida208,125189,01110.11%
Washington CountyUtah207,174182,01513.82%
Butte CountyCalifornia206,975210,151-1.51%
Elkhart CountyIndiana205,945206,991-0.51%
Calcasieu ParishLouisiana205,234216,481-5.2%
Champaign CountyIllinois205,119205,654-0.26%
Richmond CountyGeorgia204,484206,524-0.99%
Iredell CountyNorth Carolina203,546187,6838.45%
Sarpy CountyNebraska203,345191,1676.37%
Comal CountyTexas203,107163,65924.1%
Beaufort CountySouth Carolina201,811187,8157.45%
St. Louis CountyMinnesota201,470200,0830.69%
Muscogee CountyGeorgia201,322207,006-2.75%
Trumbull CountyOhio200,020201,681-0.82%
Cass CountyNorth Dakota200,011184,8768.19%
Butler CountyPennsylvania199,458194,0772.77%
Kaufman CountyTexas198,769147,14035.09%
Livingston CountyMichigan197,380193,9681.76%
Racine CountyWisconsin197,265197,568-0.15%
Bay CountyFlorida196,328174,52512.49%
DeSoto CountyMississippi195,350186,1224.96%
Broome CountyNew York194,896198,156-1.65%
Guadalupe CountyTexas194,206173,69711.81%
Outagamie CountyWisconsin194,199190,9661.69%
Sangamon CountyIllinois192,831196,144-1.69%
Kent CountyDelaware191,820182,3155.21%
El Dorado CountyCalifornia191,643191,2450.21%
Boone CountyMissouri191,205184,0473.89%
Hendricks CountyIndiana189,655175,5968.01%
Tippecanoe CountyIndiana189,347186,3871.59%
Paulding CountyGeorgia187,575169,58010.61%
Saginaw CountyMichigan187,191189,882-1.42%
Kootenai CountyIdaho186,730172,7858.07%
Lee CountyAlabama185,732174,7546.28%
Licking CountyOhio184,637178,7843.27%
Medina CountyOhio184,595182,6461.07%
Canadian CountyOklahoma182,404155,43417.35%
Ulster CountyNew York182,346181,2710.59%
Newport News cityVirginia182,256186,047-2.04%
Midland CountyTexas182,197170,3626.95%
Alamance CountyNorth Carolina181,712171,9605.67%
Parker CountyTexas181,050149,55221.06%
Vanderburgh CountyIndiana180,057180,336-0.15%
Aiken CountySouth Carolina180,032169,1686.42%
Shasta CountyCalifornia179,795182,002-1.21%
Imperial CountyCalifornia179,174179,612-0.24%
Shawnee CountyKansas177,955178,709-0.42%
Carroll CountyMaryland177,806172,9412.81%
Muskegon CountyMichigan177,589174,7841.6%
Davidson CountyNorth Carolina177,228169,2034.74%
Peoria CountyIllinois177,026181,319-2.37%
Pitt CountyNorth Carolina176,628170,3903.66%
Lower CT River Valley Planning RegionConnecticut176,448173,2681.84%
Porter CountyIndiana175,822173,3181.44%
Scott CountyIowa174,789174,6090.1%
Houston CountyGeorgia174,173164,3565.97%
Charles CountyMaryland173,835166,7414.25%
Kanawha CountyWest Virginia173,746180,233-3.6%
Dorchester CountySouth Carolina173,616162,0437.14%

US County Population Trends

Largest Counties

According to the most recent United States Census, Los Angeles County in California is the largest county in the nation, with a total population of 10,150,558 – an increase of 3.5% since 2010. Chicago's Cook County follows and, although very large in its own right, is half the size of Los Angeles County with 5,231,356 residents. Harris County in Texas, Maricopa County in Arizona, and San Diego County in California make up the rest of the top five – all have populations in excess of three million.

Counties with Growing Populations

Statistics from 2018 show that a number of counties have had substantial population growths since 2010. Fort Bend County in Texas tops the list, with its population having grown from 590,286 in 2010 to well over a population of 764,000 in 2018 – an increase of 30.8%. Three other counties in Texas are also in the top five counties with increased populations. These are Denton County (with an increase of 26.2%), Collin County (24%) and Travis County (19.7%).

Counties with Shrinking Populations

Conversely, while Wayne County is the most populous county in state of Michigan, it has seen its population decrease by 3.7% since 2010, from 1,815,069 to 1,756,598. Counties in two other midwestern states, Missouri and Ohio, have also had population decreases, although both are more modest. Ohio's Cuyahoga County has decreased from 1,278,200 to just around 1,248,000, representing a reduction of 2.5%, while St. Louis County, Missouri's population has decreased from 998,681 in 2010 to 998,216 in 2018. Just one county, Hartford County in Connecticut, shows nearly zero population change, with census figures reporting a population of approximately 895,500 in both 2010 and 2018.

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Lists of Counties by State