US County Populations 2025

400 counties

County
State
2025 Pop.
2020 Pop.
Change (2020)
Los Angeles CountyCalifornia9,550,5059,992,813-4.43%
Cook CountyIllinois5,038,0845,263,608-4.28%
Harris CountyTexas4,942,7014,734,7924.39%
Maricopa CountyArizona4,645,9474,445,0594.52%
San Diego CountyCalifornia3,255,5673,295,298-1.21%
Orange CountyCalifornia3,106,5213,185,734-2.49%
Miami-Dade CountyFlorida2,714,4892,695,6850.7%
Dallas CountyTexas2,615,0882,610,1120.19%
Riverside CountyCalifornia2,528,8442,422,9934.37%
Kings CountyNew York2,504,6132,718,447-7.87%
Clark CountyNevada2,364,6492,274,8873.95%
King CountyWashington2,283,5182,274,2820.41%
Tarrant CountyTexas2,237,5492,115,8405.75%
Queens CountyNew York2,199,4722,388,864-7.93%
San Bernardino CountyCalifornia2,197,0172,183,3910.62%
Bexar CountyTexas2,142,6552,015,5016.31%
Broward CountyFlorida1,993,8151,943,3982.59%
Santa Clara CountyCalifornia1,876,1061,931,168-2.85%
Wayne CountyMichigan1,735,6231,789,586-3.02%
Middlesex CountyMassachusetts1,638,2681,628,2350.62%
Alameda CountyCalifornia1,610,0461,680,466-4.19%
New York CountyNew York1,603,2671,677,232-4.41%
Sacramento CountyCalifornia1,584,1041,586,566-0.16%
Hillsborough CountyFlorida1,579,7461,466,2557.74%
Palm Beach CountyFlorida1,561,6691,494,2824.51%
Philadelphia CountyPennsylvania1,517,9541,600,684-5.17%
Suffolk CountyNew York1,513,5621,522,064-0.56%
Orange CountyFlorida1,510,7261,431,6795.52%
Nassau CountyNew York1,374,5571,390,491-1.15%
Travis CountyTexas1,349,7831,296,6134.1%
Franklin CountyOhio1,334,7291,324,4410.78%
Bronx CountyNew York1,305,8121,461,151-10.63%
Oakland CountyMichigan1,269,2281,272,493-0.26%
Collin CountyTexas1,268,0871,075,73617.88%
Hennepin CountyMinnesota1,262,0071,281,649-1.53%
Wake CountyNorth Carolina1,229,2691,130,4838.74%
Cuyahoga CountyOhio1,225,2761,262,573-2.95%
Allegheny CountyPennsylvania1,209,2651,249,565-3.23%
Mecklenburg CountyNorth Carolina1,202,9531,117,4237.65%
Salt Lake CountyUtah1,184,3011,186,983-0.23%
Contra Costa CountyCalifornia1,151,0371,166,069-1.29%
Fairfax CountyVirginia1,147,0161,148,627-0.14%
Fulton CountyGeorgia1,089,9191,069,3941.92%
Pima CountyArizona1,074,5341,045,1752.81%
Montgomery CountyMaryland1,069,2881,060,9040.79%
Denton CountyTexas1,067,589914,39816.75%
Duval CountyFlorida1,058,444997,7846.08%
Fresno CountyCalifornia1,020,7681,009,5521.11%
Gwinnett CountyGeorgia998,232958,3594.16%
Westchester CountyNew York988,9791,001,453-1.25%
Capitol Planning RegionConnecticut981,848962,4362.02%
St. Louis CountyMissouri979,5951,003,130-2.35%
Honolulu CountyHawaii978,5681,012,399-3.34%
Fort Bend CountyTexas972,496829,10917.29%
Marion CountyIndiana966,934976,659-1%
Bergen CountyNew Jersey966,128953,6901.3%
Pinellas CountyFlorida961,204959,7930.15%
Prince George's CountyMaryland948,330965,365-1.76%
Erie CountyNew York941,595952,342-1.13%
Pierce CountyWashington933,130923,5891.03%
DuPage CountyIllinois920,311931,317-1.18%
Hidalgo CountyTexas918,841872,8565.27%
Milwaukee CountyWisconsin912,459938,550-2.78%
Kern CountyCalifornia907,958905,9100.23%
Shelby CountyTennessee897,412929,763-3.48%
Polk CountyFlorida878,226730,15820.28%
Macomb CountyMichigan876,833880,238-0.39%
Montgomery CountyPennsylvania876,138856,9982.23%
El Paso CountyTexas875,162866,6060.99%
Worcester CountyMassachusetts874,852859,6691.77%
Middlesex CountyNew Jersey868,681861,4080.84%
Lee CountyFlorida858,937765,54712.2%
Essex CountyNew Jersey853,903859,974-0.71%
Snohomish CountyWashington853,379829,9332.83%
Baltimore CountyMaryland842,137853,387-1.32%
Hamilton CountyOhio831,732830,3770.16%
Ventura CountyCalifornia823,028843,371-2.41%
Oklahoma CountyOklahoma820,392798,2412.77%
Essex CountyMassachusetts817,269807,7911.17%
San Joaquin CountyCalifornia814,309780,6174.32%
San Francisco CountyCalifornia811,416870,518-6.79%
Cobb CountyGeorgia786,549766,3782.63%
Multnomah CountyOregon779,968816,514-4.48%
Montgomery CountyTexas774,954625,29123.93%
Jefferson CountyKentucky770,242782,845-1.61%
Suffolk CountyMassachusetts767,651797,181-3.7%
DeKalb CountyGeorgia765,418764,4890.12%
Utah CountyUtah752,138663,59513.34%
El Paso CountyColorado751,453732,3842.6%
Williamson CountyTexas747,027615,55221.36%
Monroe CountyNew York743,672757,551-1.83%
Norfolk CountyMassachusetts731,481724,5540.96%
Jackson CountyMissouri723,244717,6150.78%
Denver CountyColorado722,825717,6060.73%
Davidson CountyTennessee722,300716,0590.87%
San Mateo CountyCalifornia721,201762,479-5.41%
Hudson CountyNew Jersey711,654721,879-1.42%
Lake CountyIllinois706,482713,281-0.95%
Will CountyIllinois706,092696,8261.33%
District of ColumbiaDistrict of Columbia695,018670,8393.6%
Tulsa CountyOklahoma694,482670,7023.55%
Pasco CountyFlorida680,706566,15620.23%
Brevard CountyFlorida670,523608,77510.14%
Bernalillo CountyNew Mexico668,844676,853-1.18%
Providence CountyRhode Island666,997659,9631.07%
Ocean CountyNew Jersey666,265638,4654.35%
Kent CountyMichigan666,222658,4921.17%
Jefferson CountyAlabama658,517674,717-2.4%
Arapahoe CountyColorado655,645655,2720.06%
Bucks CountyPennsylvania646,838646,1730.1%
Monmouth CountyNew Jersey639,941642,836-0.45%
Johnson CountyKansas628,529611,1492.84%
Western CT Planning RegionConnecticut626,007618,3681.24%
Volusia CountyFlorida611,741555,77610.07%
Anne Arundel CountyMaryland597,052589,1061.35%
Washington CountyOregon596,423601,130-0.78%
Douglas CountyNebraska596,408585,4311.88%
Dane CountyWisconsin590,525562,6154.96%
Bristol CountyMassachusetts586,035576,7721.61%
New Castle CountyDelaware585,268570,9182.51%
Greenville CountySouth Carolina578,418527,2499.7%
Delaware CountyPennsylvania578,414576,3560.36%
Jefferson CountyColorado577,476583,081-0.96%
Union CountyNew Jersey577,344573,6600.64%
South Central CT Planning RegionConnecticut567,670564,0760.64%
Lancaster CountyPennsylvania562,447552,8211.74%
Baltimore cityMaryland557,503583,157-4.4%
Guilford CountyNorth Carolina556,684539,3213.22%
Chester CountyPennsylvania556,076534,8303.97%
Spokane CountyWashington554,885541,1752.53%
Stanislaus CountyCalifornia551,838553,257-0.26%
Adams CountyColorado545,077520,5004.72%
Plymouth CountyMassachusetts539,428530,2001.74%
Ada CountyIdaho536,011498,2787.57%
Summit CountyOhio535,661539,821-0.77%
Sedgwick CountyKansas534,671524,8211.88%
Montgomery CountyOhio534,440537,119-0.5%
Ramsey CountyMinnesota533,619551,716-3.28%
Camden CountyNew Jersey532,290523,1221.75%
Clark CountyWashington529,976505,3384.88%
Pinal CountyArizona522,643430,18721.49%
Morris CountyNew Jersey520,831508,4392.44%
Kane CountyIllinois516,668516,1810.09%
Polk CountyIowa513,397493,0224.13%
Passaic CountyNew Jersey512,917523,439-2.01%
Knox CountyTennessee511,247480,5166.4%
Lake CountyIndiana502,480498,9570.71%
Washoe CountyNevada500,106487,7102.54%
Seminole CountyFlorida495,567471,4555.11%
Prince William CountyVirginia494,896482,8342.5%
Richmond CountyNew York489,345494,598-1.06%
Tulare CountyCalifornia482,636473,9141.84%
Sarasota CountyFlorida481,935436,23710.48%
Sonoma CountyCalifornia480,098488,282-1.68%
Burlington CountyNew Jersey475,299461,6822.95%
York CountyPennsylvania471,822456,7203.31%
Osceola CountyFlorida468,266391,14119.72%
Manatee CountyFlorida464,947401,61915.77%
Onondaga CountyNew York464,163474,192-2.11%
Naugatuck Valley Planning RegionConnecticut461,204449,2852.65%
Hampden CountyMassachusetts459,357464,311-1.07%
Dakota CountyMinnesota455,776440,4233.49%
Lake CountyFlorida453,206386,21617.35%
Virginia Beach cityVirginia450,809459,684-1.93%
Solano CountyCalifornia449,884452,723-0.63%
East Baton Rouge ParishLouisiana445,219455,899-2.34%
Loudoun CountyVirginia443,457422,7054.91%
Marion CountyFlorida437,003377,47215.77%
Santa Barbara CountyCalifornia435,941448,424-2.78%
Berks CountyPennsylvania435,317428,6711.55%
Placer CountyCalifornia434,535405,9277.05%
Charleston CountySouth Carolina434,401409,8995.98%
Richland CountySouth Carolina432,362415,6714.02%
Madison CountyAlabama430,590390,50310.27%
Cameron CountyTexas430,308421,4802.09%
Hillsborough CountyNew Hampshire427,076422,9130.98%
Monterey CountyCalifornia426,401438,322-2.72%
Horry CountySouth Carolina426,140353,76520.46%
Clackamas CountyOregon423,283422,4680.19%
Lucas CountyOhio423,014430,859-1.82%
St. Charles CountyMissouri422,381406,4173.93%
Brazoria CountyTexas420,346373,49312.54%
Collier CountyFlorida417,898377,31010.76%
Waukesha CountyWisconsin417,227407,4962.39%
Jefferson ParishLouisiana413,271439,725-6.02%
Mobile CountyAlabama412,124414,377-0.54%
Orange CountyNew York409,428400,9862.11%
Bell CountyTexas404,671372,2588.71%
St. Lucie CountyFlorida402,986331,44121.59%
Pulaski CountyArkansas401,253399,2740.5%
Genesee CountyMichigan400,720405,777-1.25%
Allen CountyIndiana400,347386,1033.69%
Douglas CountyColorado399,844360,32310.97%
Butler CountyOhio399,673390,8782.25%
Forsyth CountyNorth Carolina399,441383,2024.24%
Chesterfield CountyVirginia395,048365,3118.14%
Hamilton CountyTennessee390,388367,2516.3%
Hamilton CountyIndiana384,009348,99610.03%
Mercer CountyNew Jersey383,455386,466-0.78%
Lehigh CountyPennsylvania380,714374,5011.66%
Rutherford CountyTennessee379,939343,29810.67%
Davis CountyUtah379,847363,7714.42%
Lane CountyOregon379,181383,308-1.08%
Anoka CountyMinnesota379,107364,4994.01%
Spartanburg CountySouth Carolina378,198329,37914.82%
Weld CountyColorado377,794331,45813.98%
Larimer CountyColorado377,159359,9234.79%
Stark CountyOhio372,578374,522-0.52%
Galveston CountyTexas370,458351,5905.37%
Washtenaw CountyMichigan363,600371,834-2.21%
Nueces CountyTexas353,687353,3980.08%
Orleans ParishLouisiana352,574383,241-8%
Somerset CountyNew Jersey352,432344,7542.23%
Westmoreland CountyPennsylvania349,493354,346-1.37%
Marion CountyOregon346,785346,3500.13%
St. Johns CountyFlorida346,186277,09924.93%
Durham CountyNorth Carolina344,092325,5675.69%
Rockland CountyNew York341,707337,3671.29%
Cumberland CountyNorth Carolina340,108335,4701.38%
Howard CountyMaryland337,271332,8141.34%
Henrico CountyVirginia335,174334,9050.08%
Escambia CountyFlorida333,064322,5683.25%
Lancaster CountyNebraska331,280323,1652.51%
Luzerne CountyPennsylvania329,172325,2171.22%
Greater Bridgeport Planning RegionConnecticut328,703324,3871.33%
Benton CountyArkansas327,395286,61814.23%
Lubbock CountyTexas327,298311,5785.05%
Boulder CountyColorado325,815330,938-1.55%
Rockingham CountyNew Hampshire322,801314,6212.6%
Lorain CountyOhio321,668313,4982.61%
Northampton CountyPennsylvania321,473312,7842.78%
Fayette CountyKentucky319,900322,627-0.85%
Lexington CountySouth Carolina318,374295,0477.91%
Albany CountyNew York318,135314,0181.31%
McHenry CountyIllinois315,284309,8821.74%
Cumberland CountyMaine313,016303,5853.11%
Gloucester CountyNew Jersey311,735302,5633.03%
Chatham CountyGeorgia308,915295,0894.69%
Ottawa CountyMichigan308,280296,9073.83%
Greene CountyMissouri307,439299,3282.71%
York CountySouth Carolina306,558284,0287.93%
Frederick CountyMaryland305,093272,78611.84%
Cleveland CountyOklahoma304,611296,2362.83%
Hays CountyTexas303,252243,96824.3%
Thurston CountyWashington299,731295,9981.26%
Clayton CountyGeorgia298,102299,439-0.45%
Cherokee CountyGeorgia297,418268,15610.91%
Dutchess CountyNew York296,232295,9010.11%
Leon CountyFlorida296,175293,9550.76%
Merced CountyCalifornia295,340281,8304.79%
Dauphin CountyPennsylvania290,328286,7101.26%
Alachua CountyFlorida289,900279,7373.63%
Ingham CountyMichigan286,957284,6750.8%
Washington CountyMinnesota284,470268,3895.99%
Anchorage MunicipalityAlaska284,259290,893-2.28%
Forsyth CountyGeorgia284,037252,90112.31%
San Luis Obispo CountyCalifornia280,825281,884-0.38%
Southeastern CT Planning RegionConnecticut280,388278,3420.74%
St. Tammany ParishLouisiana280,275265,0005.76%
Buncombe CountyNorth Carolina280,123269,7023.86%
Winnebago CountyIllinois279,682284,916-1.84%
Sussex CountyDelaware277,633238,62916.35%
Kitsap CountyWashington277,348275,8230.55%
Weber CountyUtah276,858262,9885.27%
Berkeley CountySouth Carolina275,747231,53319.1%
Cumberland CountyPennsylvania275,150260,2585.72%
Atlantic CountyNew Jersey274,875274,1900.25%
Brown CountyWisconsin274,115268,9511.92%
St. Joseph CountyIndiana273,980272,6820.48%
McLennan CountyTexas273,425261,1934.68%
St. Louis cityMissouri272,876300,496-9.19%
Webb CountyTexas272,206267,3631.81%
Williamson CountyTennessee271,904249,5528.96%
Washington CountyArkansas271,283246,7749.93%
Canyon CountyIdaho271,238233,01316.4%
Union CountyNorth Carolina271,012239,47013.17%
Baldwin CountyAlabama267,459233,22714.68%
Henry CountyGeorgia266,895241,85210.35%
Harford CountyMaryland266,302261,2301.94%
Clay CountyMissouri265,456254,1374.45%
Erie CountyPennsylvania265,033270,578-2.05%
Kalamazoo CountyMichigan264,861261,7961.17%
Madison CountyIllinois261,112265,643-1.71%
Warren CountyOhio256,974243,2285.65%
Chesapeake cityVirginia256,740249,7812.79%
Santa Cruz CountyCalifornia256,161270,474-5.29%
Johnston CountyNorth Carolina256,061217,80817.56%
Yakima CountyWashington255,891256,733-0.33%
Yavapai CountyArizona254,783237,2177.41%
Lafayette ParishLouisiana253,822242,1454.82%
Smith CountyTexas251,637234,1997.45%
Jefferson CountyTexas251,286256,133-1.89%
Marin CountyCalifornia250,913261,306-3.98%
Brazos CountyTexas250,247234,5056.71%
Montgomery CountyTennessee249,818221,28112.9%
St. Clair CountyIllinois248,524256,844-3.24%
Cabarrus CountyNorth Carolina248,230227,2199.25%
New Hanover CountyNorth Carolina244,988226,3268.25%
Clay CountyFlorida244,049218,95111.46%
Ellis CountyTexas243,841194,31725.49%
Gaston CountyNorth Carolina243,786228,5326.67%
Delaware CountyOhio241,856215,16612.4%
Saratoga CountyNew York239,197235,7931.44%
Shelby CountyAlabama238,934223,9126.71%
Tuscaloosa CountyAlabama238,739231,5473.11%
Jefferson CountyMissouri235,250226,9373.66%
Arlington CountyVirginia235,130238,814-1.54%
Whatcom CountyWashington234,561227,4493.13%
Lake CountyOhio231,448232,516-0.46%
Barnstable CountyMassachusetts231,049228,0121.33%
Richmond cityVirginia231,007226,9361.79%
Mohave CountyArizona229,236214,1857.03%
Linn CountyIowa229,036230,419-0.6%
Doña Ana CountyNew Mexico228,570220,0603.87%
Norfolk cityVirginia227,674237,789-4.25%
Hall CountyGeorgia226,559203,47311.35%
Oneida CountyNew York225,949231,082-2.22%
Mahoning CountyOhio224,944228,009-1.34%
Hernando CountyFlorida224,551195,62414.79%
Onslow CountyNorth Carolina222,966207,7577.32%
Okaloosa CountyFlorida222,464212,0854.89%
Montgomery CountyAlabama222,338228,342-2.63%
Yuma CountyArizona221,915205,6597.9%
York CountyMaine221,858212,2604.52%
Caddo ParishLouisiana221,290236,945-6.61%
Benton CountyWashington219,999207,4196.07%
Anderson CountySouth Carolina219,924204,1957.7%
Jackson CountyOregon218,966223,620-2.08%
Johnson CountyTexas217,726180,96420.31%
Yolo CountyCalifornia217,596216,2910.6%
Lackawanna CountyPennsylvania216,869215,5390.62%
Sumner CountyTennessee216,540197,4169.69%
Clermont CountyOhio214,558208,7502.78%
Charlotte CountyFlorida213,238187,99513.43%
Minnehaha CountySouth Dakota213,100197,6957.79%
Santa Rosa CountyFlorida213,088189,01112.74%
Deschutes CountyOregon212,573199,4646.57%
Comal CountyTexas212,286163,65929.71%
Washington CountyUtah211,896182,01516.42%
Kaufman CountyTexas211,848147,14043.98%
Harrison CountyMississippi210,950208,8091.03%
Washington CountyPennsylvania210,816209,4340.66%
Hawaii CountyHawaii210,149200,7444.69%
Hinds CountyMississippi209,500226,765-7.61%
Niagara CountyNew York207,437212,126-2.21%
Iredell CountyNorth Carolina207,382187,68310.5%
Sarpy CountyNebraska206,804191,1678.18%
Butte CountyCalifornia206,778210,151-1.61%
Calcasieu ParishLouisiana206,707216,481-4.51%
Elkhart CountyIndiana205,481206,991-0.73%
Beaufort CountySouth Carolina204,643187,8158.96%
Champaign CountyIllinois204,594205,654-0.52%
Cass CountyNorth Dakota203,660184,87610.16%
Richmond CountyGeorgia203,554206,524-1.44%
St. Louis CountyMinnesota202,426200,0831.17%
Bay CountyFlorida201,887174,52515.68%
Muscogee CountyGeorgia200,767207,006-3.01%
Butler CountyPennsylvania200,503194,0773.31%
Guadalupe CountyTexas199,958173,69715.12%
Trumbull CountyOhio199,667201,681-1%
Livingston CountyMichigan198,003193,9682.08%
Racine CountyWisconsin197,917197,5680.18%
DeSoto CountyMississippi197,453186,1226.09%
Outagamie CountyWisconsin195,164190,9662.2%
Kent CountyDelaware193,851182,3156.33%
Broome CountyNew York193,715198,156-2.24%
Boone CountyMissouri192,947184,0474.84%
Hendricks CountyIndiana192,923175,5969.87%
Sangamon CountyIllinois192,171196,144-2.03%
Paulding CountyGeorgia191,986169,58013.21%
El Dorado CountyCalifornia191,071191,245-0.09%
Tippecanoe CountyIndiana189,902186,3871.89%
Canadian CountyOklahoma188,979155,43421.58%
Parker CountyTexas188,606149,55226.11%
Kootenai CountyIdaho188,450172,7859.07%
Lee CountyAlabama188,249174,7547.72%
Midland CountyTexas187,286170,3629.93%
Saginaw CountyMichigan186,600189,882-1.73%
Licking CountyOhio186,073178,7844.08%
Medina CountyOhio185,148182,6461.37%
Alamance CountyNorth Carolina184,259171,9607.15%
Aiken CountySouth Carolina182,934169,1688.14%
Ulster CountyNew York182,359181,2710.6%
Newport News cityVirginia181,394186,047-2.5%
Vanderburgh CountyIndiana180,304180,336-0.02%
Davidson CountyNorth Carolina179,652169,2036.18%
Imperial CountyCalifornia179,291179,612-0.18%
Shasta CountyCalifornia179,224182,002-1.53%
Carroll CountyMaryland178,973172,9413.49%
Muskegon CountyMichigan178,614174,7842.19%
Shawnee CountyKansas178,164178,709-0.3%
Pitt CountyNorth Carolina178,137170,3904.55%
Dorchester CountySouth Carolina177,399162,0439.48%
Lower CT River Valley Planning RegionConnecticut176,681173,2681.97%
Peoria CountyIllinois176,539181,319-2.64%
Houston CountyGeorgia176,372164,3567.31%
Porter CountyIndiana176,309173,3181.73%
Charles CountyMaryland175,697166,7415.37%
Scott CountyIowa175,308174,6090.4%
Citrus CountyFlorida175,072154,56813.27%

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 9,550,505 – a decrease of 4.4% since 2020. Chicago's Cook County follows and, although very large in its own right, is about half the size of Los Angeles County with 5,038,084 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.

County
State
2025 Pop.
Los Angeles CountyCalifornia9,550,505
Cook CountyIllinois5,038,084
Harris CountyTexas4,942,701
Maricopa CountyArizona4,645,947
San Diego CountyCalifornia3,255,567

Counties with Growing Populations

Recent statistics show remarkable population growth in several Texas counties since 2020. Kaufman County leads with a dramatic 44% increase, followed by Comal County at 29.7%. Parker County and Ellis County also saw significant growth at 26.1% and 25.5% respectively. The only non-Texas county in the top five is St. Johns County, which has experienced a 24.9% population increase since 2020.

County
State
Change (2020)
Kaufman CountyTexas43.98%
Comal CountyTexas29.71%
Parker CountyTexas26.11%
Ellis CountyTexas25.49%
St. Johns CountyFlorida24.93%

Counties with Shrinking Populations

Recent statistics show significant population declines in several urban areas since 2020. Bronx County experienced the steepest drop at 10.6%, followed by St. Louis city at 9.2%. Orleans Parish saw an 8% decrease, while two more New York City boroughs rounded out the top five: Queens County and Kings County declined by 7.9% and 7.9% respectively.