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RANKING · 2010 CENSUS · 125 SHOWN OF 3,125

Most population gained, US counties · 2010

US counties that added the most residents from the 2000 census to 2010, by raw count of people rather than percentage.

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SAME RANKING BYCitiesStatesMetros
RELATEDLargest by populationFastest growingFastest shrinkingMost population lostMost densely populatedMost sparsely populated
YEAR2000201020202025
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RANKPLACESTATEPOPPOPULATION CHANGEVS 2000
3001Choctaw County, ALAL11,904-2,063+2049%
3002Aroostook County, MEME66,609-2,068−84%
3003Wabash County, ININ30,713-2,072+1801%
3004Elmore County, IDID29,465-2,092−126%
3005Monroe County, ARAR6,244-2,105+95%
3006Allen County, OHOH100,881-2,142+67%
3007Whiteside County, ILIL54,121-2,155−561%
3008Lee County, ARAR8,029-2,156+356%
3009Swift County, MNMN9,763-2,173−276%
3010Lowndes County, ALAL9,359-2,174−367%
3011Wayne County, ININ66,169-2,180+155%
3012Lee County, IAIA32,306-2,190+245%
3013Howard County, ININ83,904-2,212−153%
3014Breathitt County, KYKY12,558-2,222−660%
3015Webster County, IAIA36,838-2,222+1977%
3016Claiborne County, MSMS8,058-2,227−583%
3017Chemung County, NYNY80,415-2,240−46%
3018Lyon County, KSKS32,266-2,245−287%
3019Marion County, ILIL36,382-2,254−1834%
3020Somerset County, PAPA72,004-2,281−226%
3021Vermilion County, ILIL71,259-2,294−47%
3022Cerro Gordo County, IAIA42,372-2,296+703%
3023Chicot County, ARAR9,107-2,317+45%
3024Desha County, ARAR9,984-2,333+60%
3025San Patricio County, TXTX72,053-2,334−128%
3026Ashley County, ARAR17,831-2,356+2042%
3027Chambers County, ALAL34,253-2,368+708%
3028Grayson County, VAVA15,230-2,384−245%
3029Bay County, MIMI102,123-2,386+52%
3030Ramsey County, MNMN541,623-2,395−109%
3031Marion County, SCSC28,242-2,404−253%
3032Holmes County, MSMS15,465-2,411−48320%
3033Marshall County, WVWV29,159-2,412+31%
3034Erie County, OHOH73,296-2,472−189%
3035McKean County, PAPA38,984-2,486+108%
3036Harrison County, MSMS217,136-2,496−110%
3037Stark County, OHOH373,771-2,512−124%
3038Tuscola County, MIMI52,680-2,537−192%
3039Dallas County, ALAL35,140-2,545+44%
3040Newport County, RIRI83,051-2,545+45%
3041Venango County, PAPA49,346-2,581+42%
3042Macon County, ALAL18,132-2,653+222%
3043Ouachita County, ARAR21,731-2,670+50%
3044Halifax County, NCNC46,534-2,679−244%
3045Williamsburg County, SCSC29,662-2,794−795%
3046Clay County, KYKY19,465-2,826−201%
3047Buchanan County, VAVA18,492-2,880−34%
3048Knox County, ILIL47,767-2,917+424%
3049Huron County, MIMI30,530-2,961−363%
3050Ohio County, WVWV40,496-2,984−13%
3051Floyd County, KYKY34,401-2,990+161%
3052Laurens County, SCSC71,848-3,030−126%
3053Morehouse Parish, LALA23,705-3,042+232%
3054Orange County, TXTX86,266-3,129−170%
3055Cameron Parish, LALA4,718-3,152−531%
3056Elk County, PAPA29,926-3,166−1453%
3057Crawford County, OHOH41,896-3,182+252%
3058McKinley County, NMNM68,119-3,306−123%
3059Grant County, ININ66,524-3,342+336%
3060Niagara County, NYNY208,912-3,377+271%
3061Armstrong County, PAPA63,698-3,451+218%
3062Lawrence County, PAPA83,911-3,535+121%
3063Jefferson County, ALAL665,742-3,581−134%
3064Chattahoochee County, GAGA8,465-3,615+76%
3065Cattaraugus County, NYNY75,390-3,638+1204%
3066Mercer County, PAPA107,860-3,655+415%
3067Walker County, ALAL65,140-3,690−221%
3068Pike County, KYKY54,721-3,712−4%
3069Plaquemines Parish, LALA22,256-3,715−414%
3070Berkshire County, MAMA128,224-3,734−15%
3071Finney County, KSKS37,505-3,747−150%
3072Henry County, VAVA49,242-3,779−482%
3073Harlan County, KYKY24,725-3,924+16%
3074Lycoming County, PAPA112,587-3,933−395%
3075Macon County, ILIL99,300-3,938+58%
3076Union County, ARAR36,926-3,990+266%
3077Jefferson County, OHOH63,597-4,185−35%
3078Columbiana County, OHOH99,377-4,234−211%
3079St. Landry Parish, LALA80,765-4,316−159%
3080Richland County, OHOH124,893-4,377−261%
3081Coahoma County, MSMS19,849-4,471+329%
3082Phillips County, ARAR14,255-4,688+96%
3083Westmoreland County, PAPA349,324-4,824+1371%
3084Chautauqua County, NYNY124,126-4,845+126%
3085Sunflower County, MSMS22,893-4,919−427%
3086Pinellas County, FLFL948,563-4,940−107%
3087Portsmouth, VAVA96,777-5,030+51%
3088Cape May County, NJNJ93,390-5,061−170%
3089Accomack County, VAVA33,859-5,141−178%
3090McDowell County, WVWV16,878-5,216−34%
3091Danville, VAVA41,647-5,356+15%
3092Mississippi County, ARAR37,828-5,499−1%
3093Hinds County, MSMS211,888-5,515+51%
3094Leflore County, MSMS25,686-5,630−1029%
3095Berrien County, MIMI152,444-5,640−625%
3096Barnstable County, MAMA233,539-6,342−118%
3097Clark County, OHOH135,340-6,409+128%
3098Bolivar County, MSMS28,262-6,488+422%
3099Monroe County, FLFL80,406-6,499−515%
3100Jefferson County, ARAR62,987-6,843+466%
3101Kanawha County, WVWV172,381-7,010−7%
3102Cambria County, PAPA128,968-8,919−14%
3103Hampton, VAVA137,315-9,001−171%
3104Essex County, NJNJ896,379-9,664−163%
3105Saginaw County, MIMI187,688-9,870+418%
3106Genesee County, MIMI401,093-10,351−282%
3107Beaver County, PAPA166,032-10,873+132%
3108Washington County, MSMS40,446-11,840+139%
3109Fayette County, PAPA123,021-12,038−466%
3110Lucas County, OHOH423,347-13,239+81%
3111Trumbull County, OHOH198,972-14,804+449%
3112St. Louis County, MOMO990,911-17,361−176%
3113Mahoning County, OHOH224,706-18,732+158%
3114Jefferson Parish, LALA431,398-22,914−420%
3115Montgomery County, OHOH539,598-23,909+62%
3116St. Louis, MOMO278,144-28,895−40%
3117Baltimore, MDMD569,997-30,193−64%
3118Erie County, NYNY946,741-31,225+71%
3119St. Bernard Parish, LALA45,642-31,332−5339%
3120Hamilton County, OHOH838,418-42,929+105%
3121Allegheny County, PAPA1,225,035-58,318+6%
3122Cuyahoga County, OHOH1,232,925-113,856+527%
3123Orleans Parish, LALA362,154-140,845+1048%
3124Cook County, ILIL5,194,625-182,066−167%
3125Wayne County, MIMI1,769,038-240,578+376%
SHOWING 3,001–3,125 OF 3,125
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UPDATED 2026-07-15 · DATA: US CENSUS BUREAU DECENNIAL CENSUS