Which county has the highest american population?

Los Angeles County, California ranks #1 with 324,424 (2020 Decennial Census).

What are the top 5 counties by american population?

Los Angeles County, California, Harris County, Texas, Maricopa County, Arizona, Broward County, Florida, Orange County, California.

How many counties are in this ranking?

3,130 counties qualify after filtering for population minimums and data availability. The ranking covers 2020 Decennial Census data.

How is american population measured?

Number of residents who are American ancestry (Ancestry, ACS detailed tables). Source: US Census Bureau, 2020 Decennial Census.

RANKING · 2020 CENSUS · 130 SHOWN OF 3,130

Largest American population, US counties · 2020

US counties ranked by the number of residents who are American ancestry, from the 2020 American Community Survey detailed-origin tables. Each list covers the full eligible universe; download the complete data as CSV.

American ancestry: full group profile →

All statesAll rankings

SAME RANKING BYCities States Metros

YEAR2010 2020 2024

RANKPLACESTATEPOPAMERICAN POPULATIONVS 2010

3001Traverse County, MNMN3,13077−4%

3002Greeley County, NENE2,15477−37%

3003Emmons County, NDND3,21577+54%

3004Morton County, KSKS2,47077+28%

3005Wayne County, UTUT2,58776+31%

3006Kinney County, TXTX3,12876−78%

3007Terrell County, TXTX70275−29%

3008Harding County, SDSD1,33175+127%

3009Oliver County, NDND1,89874−8%

3010Rawlins County, KSKS2,43174−55%

3011Hettinger County, NDND2,49273−8%

3012Bennett County, SDSD3,30771+8%

3013Clark County, SDSD4,03171−45%

3014Kiowa County, COCO1,41270+13%

3015Stonewall County, TXTX1,18670−57%

3016Prince of Wales-Hyder Census Area, AKAK5,77770−5%

3017Foster County, NDND3,21270−65%

3018Douglas County, SDSD2,88870−55%

3019Lake County, COCO7,55268−50%

3020Reagan County, TXTX3,16668−74%

3021Sedgwick County, COCO2,24767−52%

3022Armstrong County, TXTX1,84367+12%

3023Wells County, NDND3,72967−15%

3024Briscoe County, TXTX1,47466−50%

3025Dunn County, NDND4,05866+3%

3026Liberty County, MTMT1,95765+103%

3027Oglala Lakota County, SDSD13,33865–

3028Red Lake County, MNMN3,94064−17%

3029Florence County, WIWI4,74864+8%

3030Nance County, NENE3,29063−43%

3031Camas County, IDID1,31663−74%

3032Harding County, NMNM61763+200%

3033Prairie County, MTMT1,11262−60%

3034Niobrara County, WYWY2,34161−15%

3035Bethel Census Area, AKAK18,39161+15%

3036Kittson County, MNMN4,03161−26%

3037Chugach Census Area, AKAK6,55360–

3038Mahnomen County, MNMN5,15360−41%

3039Crane County, TXTX4,55458−68%

3040Garden County, NENE1,80457−58%

3041Hayes County, NENE82156+56%

3042Sherman County, NENE2,92456−62%

3043Mora County, NMNM4,05156+44%

3044Sully County, SDSD1,47955+20%

3045Pawnee County, NENE2,51054−13%

3046Hand County, SDSD3,12154−53%

3047Glasscock County, TXTX1,12852+100%

3048Kearny County, KSKS3,88852−26%

3049Aleutians West Census Area, AKAK5,24051+28%

3050Petersburg, AKAK3,39450−72%

3051Hamilton County, KSKS2,50050−15%

3052Concho County, TXTX3,60749−96%

3053Loving County, TXTX5249–

3054Jones County, SDSD91349+145%

3055Sioux County, NENE1,18848−13%

3056Throckmorton County, TXTX1,55448−47%

3057Towner County, NDND2,04048−34%

3058Hyde County, SDSD1,19148+37%

3059Stanton County, KSKS1,98648−45%

3060Day County, SDSD5,48447−86%

3061Yukon-Koyukuk Census Area, AKAK5,02846−72%

3062Treasure County, MTMT72846−87%

3063Lipscomb County, TXTX2,95545−77%

3064Benson County, NDND5,75945+7%

3065Golden Valley County, MTMT84444−40%

3066Grant County, NENE56143−59%

3067North Slope, AKAK10,58243+231%

3068Meagher County, MTMT2,13742−34%

3069Emery County, UTUT10,17741−83%

3070Wibaux County, MTMT88541−68%

3071Motley County, TXTX1,04341−42%

3072Boyd County, NENE1,67440−2%

3073Jackson County, SDSD2,66639+680%

3074Keweenaw County, MIMI2,18638−65%

3075Griggs County, NDND2,23938+36%

3076Divide County, NDND2,11038−36%

3077Esmeralda County, NVNV72935−72%

3078Sterling County, TXTX1,34935−80%

3079Pierce County, NDND3,83834−61%

3080Garfield County, NENE1,71032−75%

3081McPherson County, SDSD2,34732−48%

3082Cook County, MNMN5,52231−63%

3083Loup County, NENE57031−37%

3084Greeley County, KSKS1,18231−54%

3085Lane County, KSKS1,50831−75%

3086McMullen County, TXTX54430–

3087Golden Valley County, NDND1,80830−23%

3088Hoonah-Angoon Census Area, AKAK2,27129−37%

3089Campbell County, SDSD1,37727−29%

3090Alpine County, CACA1,04325+67%

3091Arthur County, NENE39623+0%

3092McPherson County, NENE36923+188%

3093Banner County, NENE68623−61%

3094Irion County, TXTX1,46323−83%

3095Foard County, TXTX1,04422−74%

3096Blaine County, NENE45821−25%

3097Pershing County, NVNV6,42120−93%

3098Menard County, TXTX1,95619−98%

3099Copper River Census Area, AKAK2,66619–

3100Schleicher County, TXTX2,24519−96%

3101Sheridan County, NDND1,29619−17%

3102Slope County, NDND62818−10%

3103Keya Paha County, NENE79217−78%

3104Upton County, TXTX3,13116+1500%

3105Nelson County, NDND2,96315−88%

3106Hooker County, NENE68614−82%

3107Wheeler County, NENE78914−69%

3108Daggett County, UTUT93412+50%

3109King County, TXTX19212−48%

3110Steele County, NDND1,79712−37%

3111San Juan County, COCO81311–

3112Burke County, NDND2,13211−61%

3113Dillingham Census Area, AKAK4,48310−57%

3114Lake and Peninsula, AKAK1,3579+350%

3115Mineral County, COCO9109−84%

3116Menominee County, WIWI4,1998–

3117Sioux County, NDND3,6678−33%

3118Eddy County, NDND2,3297−77%

3119Mellette County, SDSD2,1377−42%

3120Jackson County, COCO1,2116−94%

3121Sierra County, CACA3,0985−96%

3122Northwest Arctic, AKAK7,0955−58%

3123Wrangell, AKAK2,0074−95%

3124Yakutat, AKAK6724−60%

3125Thomas County, NENE6394−88%

3126Aleutians East, AKAK3,4794−91%

3127Kusilvak Census Area, AKAK7,9323–

3128Skagway, AKAK1,1043+200%

3129Billings County, NDND1,0713−63%

3130Hinsdale County, COCO7532−50%

SHOWING 3,001–3,130 OF 3,130

1 2 3 4 5 6 7

Download CSV (full list, 3,130 rows)

UPDATED 2026-07-15 · DATA: US CENSUS BUREAU DECENNIAL CENSUS