CensusEasy
RANKING · 2025 ESTIMATES · 135 SHOWN OF 3,135

Most population gained, US counties

US counties that added the most residents from the 2020 census to 2025, by raw count of people rather than percentage.

Flip the list · Most population lost, US counties →
All statesAll rankings
SAME RANKING BYCitiesStatesMetros
RELATEDLargest by populationFastest growingFastest shrinkingMost population lostMost densely populatedMost sparsely populated
YEAR2000201020202025
Filter by state
All USAlaskaAlabamaArkansasArizonaCaliforniaColoradoFloridaGeorgiaIowaIdahoIllinoisIndianaKansasKentuckyLouisianaMassachusettsMarylandMaineMichiganMinnesotaMissouriMississippiMontanaNorth CarolinaNorth DakotaNebraskaNew HampshireNew JerseyNew MexicoNevadaNew YorkOhioOklahomaOregonPennsylvaniaSouth CarolinaSouth DakotaTennesseeTexasUtahVirginiaVermontWashingtonWisconsinWest VirginiaWyoming
RANKPLACESTATEPOPPOPULATION CHANGEVS 2000
3001Greene County, PAPA33,885-2,069−284%
3002Halifax County, NCNC46,534-2,088−213%
3003Harlan County, KYKY24,725-2,106−38%
3004Mingo County, WVWV21,455-2,113−61%
3005Somerset County, PAPA72,004-2,125−218%
3006Union County, ARAR36,926-2,128+95%
3007Crawford County, PAPA81,792-2,146−151%
3008Lawrence County, PAPA83,911-2,159+35%
3009Mercer County, WVWV57,503-2,161+8%
3010Charlottesville, VAVA44,388-2,165−146%
3011Sangamon County, ILIL194,170-2,173−121%
3012Beaver County, PAPA166,032-2,183−53%
3013Logan County, WVWV30,375-2,192−59%
3014Boulder County, COCO328,560-2,198−103%
3015Knox County, ILIL47,767-2,200+295%
3016Jefferson County, TXTX254,321-2,205−117%
3017McDowell County, WVWV16,878-2,233−72%
3018Phillips County, ARAR14,255-2,313−3%
3019Fayette County, WVWV38,165-2,323+523%
3020Erie County, OHOH73,296-2,326−184%
3021Sonoma County, CACA486,444-2,419−103%
3022Butte County, CACA209,211-2,421−112%
3023Saginaw County, MIMI187,688-2,436+28%
3024Jefferson County, COCO580,451-2,459−103%
3025Tuolumne County, CACA53,160-2,460−141%
3026Clearfield County, PAPA78,100-2,462−147%
3027Monroe County, FLFL80,406-2,468−258%
3028Columbiana County, OHOH99,377-2,500−166%
3029Lawrence County, OHOH55,710-2,530−622%
3030Hertford County, NCNC19,015-2,537−3353%
3031Newport County, RIRI83,051-2,592+47%
3032St. John the Baptist Parish, LALA39,875-2,602−185%
3033Reeves County, TXTX12,138-2,610−4%
3034Christian County, KYKY70,115-2,633−179%
3035Scioto County, OHOH71,365-2,643+133%
3036Leflore County, MSMS25,686-2,653−538%
3037Lauderdale County, MSMS70,317-2,667−202%
3038Bolivar County, MSMS28,262-2,723+119%
3039Madison County, ILIL263,110-2,749−128%
3040Mercer County, PAPA107,860-2,792+293%
3041Rock Island County, ILIL141,869-2,803−531%
3042Raleigh County, WVWV71,775-2,816−217%
3043St. Mary Parish, LALA46,552-2,854−38%
3044Mississippi County, ARAR37,828-2,857−48%
3045Vermilion County, ILIL71,259-2,929−32%
3046Broome County, NYNY195,736-2,947−75%
3047Warren County, MSMS41,759-2,963−268%
3048Trumbull County, OHOH198,972-3,005+11%
3049St. Lawrence County, NYNY105,488-3,017+6916%
3050Newport News, VAVA183,230-3,017−130%
3051Montgomery County, ALAL225,891-3,063−121%
3052Sunflower County, MSMS22,893-3,078−305%
3053Iberia Parish, LALA66,846-3,083−162%
3054Mobile County, ALAL411,658-3,151−115%
3055Cabell County, WVWV91,183-3,167+7265%
3056Dougherty County, GAGA82,616-3,174+1190%
3057Peoria County, ILIL178,553-3,277−641%
3058Blair County, PAPA119,541-3,281+135%
3059Dallas County, ALAL35,140-3,322+88%
3060Mendocino County, CACA88,122-3,479−159%
3061Chautauqua County, NYNY124,126-3,531+65%
3062Vernon Parish, LALA45,091-3,659−61%
3063Chemung County, NYNY80,415-3,733−10%
3064Niagara County, NYNY208,912-3,754+313%
3065Yazoo County, MSMS22,947-3,796−244%
3066Mahoning County, OHOH224,706-3,908−46%
3067Pike County, KYKY54,721-3,948+3%
3068Potter County, TXTX114,453-4,072−126%
3069Anchorage, AKAK287,155-4,092−112%
3070Rapides Parish, LALA125,877-4,146−21%
3071Maui County, HIHI160,592-4,162−115%
3072Jefferson County, ARAR62,987-4,273+253%
3073Howard County, TXTX30,504-4,356−439%
3074Washington County, MSMS40,446-4,476−10%
3075Cambria County, PAPA128,968-4,504−57%
3076Lassen County, CACA28,117-4,613−174%
3077Macon County, ILIL99,300-4,698+88%
3078Muscogee County, GAGA202,171-4,751−168%
3079McKinley County, NMNM68,119-4,783−134%
3080Humboldt County, CACA131,647-4,816−165%
3081Erie County, PAPA265,832-5,044−196%
3082Napa County, CACA132,949-5,070−138%
3083Genesee County, MIMI401,093-5,118−190%
3084Jefferson County, NYNY111,540-5,181−752%
3085Monterey County, CACA433,729-5,306−112%
3086Westmoreland County, PAPA349,324-5,339+1528%
3087Terrebonne Parish, LALA104,163-5,417−172%
3088Oneida County, NYNY226,392-5,733−63%
3089Virginia Beach, VAVA453,737-5,733−118%
3090Fayette County, PAPA123,021-5,783−276%
3091Suffolk County, MAMA791,891-6,045−123%
3092Santa Barbara County, CACA442,065-6,164−121%
3093St. Clair County, ILIL250,708-6,692−1%
3094Baltimore County, MDMD847,650-6,885−111%
3095Norfolk, VAVA231,013-6,992−74%
3096Erie County, NYNY946,741-7,495−59%
3097Lucas County, OHOH423,347-7,932+9%
3098Calcasieu Parish, LALA208,466-8,319−154%
3099Kanawha County, WVWV172,381-8,364+11%
3100Marin County, CACA253,694-8,627−150%
3101Bernalillo County, NMNM667,601-8,843−112%
3102Monroe County, NYNY750,506-8,937−142%
3103Jefferson County, ALAL665,742-8,979−185%
3104Jefferson Parish, LALA431,398-9,383−231%
3105Onondaga County, NYNY466,584-9,932−7%
3106Pinellas County, FLFL948,563-10,544−115%
3107Ramsey County, MNMN541,623-10,729−142%
3108Santa Cruz County, CACA258,852-12,009−146%
3109Ventura County, CACA830,851-12,992−115%
3110St. Louis County, MOMO990,911-13,214−158%
3111Caddo Parish, LALA224,226-13,622−449%
3112Milwaukee County, WIWI924,216-15,273−20%
3113Baltimore, MDMD569,997-15,711−81%
3114Hinds County, MSMS211,888-15,854+335%
3115San Diego County, CACA3,282,248-16,386−105%
3116Shelby County, TNTN910,226-19,518−127%
3117Multnomah County, OROR795,391-20,037−126%
3118San Mateo County, CACA743,568-20,874−136%
3119Orleans Parish, LALA362,154-21,843+78%
3120Santa Clara County, CACA1,914,391-21,868−112%
3121St. Louis, MOMO278,144-23,434−52%
3122Wayne County, MIMI1,769,038-24,523−51%
3123Allegheny County, PAPA1,225,035-25,543−53%
3124Honolulu County, HIHI988,703-27,805−170%
3125New York County, NYNY1,664,862-29,389−159%
3126Philadelphia County, PAPA1,574,281-29,516−57%
3127Cuyahoga County, OHOH1,232,925-31,892+76%
3128Orange County, CACA3,149,507-37,482−109%
3129Alameda County, CACA1,636,630-45,723−128%
3130Queens County, NYNY2,358,182-47,282−117%
3131San Francisco County, CACA826,079-47,886−191%
3132Bronx County, NYNY1,406,332-66,322−151%
3133Cook County, ILIL5,194,625-80,916−130%
3134Kings County, NYNY2,653,963-82,111−150%
3135Los Angeles County, CACA9,694,934-319,075−149%
SHOWING 3,001–3,135 OF 3,135
1234567
Download CSV (full list, 3,135 rows)

UPDATED 2026-07-15 · DATA: US CENSUS BUREAU POPULATION ESTIMATES