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

3001Emmons County, NDND3,21577+54%

3002Traverse County, MNMN3,13077−4%

3003Greeley County, NENE2,15477−37%

3004Morton County, KSKS2,47077+28%

3005Kinney County, TXTX3,12876−78%

3006Wayne County, UTUT2,58776+31%

3007Harding County, SDSD1,33175+127%

3008Terrell County, TXTX70275−29%

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%

3014Prince of Wales-Hyder Census Area, AKAK5,77770−5%

3015Foster County, NDND3,21270−65%

3016Douglas County, SDSD2,88870−55%

3017Stonewall County, TXTX1,18670−57%

3018Kiowa County, COCO1,41270+13%

3019Lake County, COCO7,55268−50%

3020Reagan County, TXTX3,16668−74%

3021Wells County, NDND3,72967−15%

3022Armstrong County, TXTX1,84367+12%

3023Sedgwick County, COCO2,24767−52%

3024Briscoe County, TXTX1,47466−50%

3025Dunn County, NDND4,05866+3%

3026Oglala Lakota County, SDSD13,33865–

3027Liberty County, MTMT1,95765+103%

3028Red Lake County, MNMN3,94064−17%

3029Florence County, WIWI4,74864+8%

3030Harding County, NMNM61763+200%

3031Camas County, IDID1,31663−74%

3032Nance County, NENE3,29063−43%

3033Prairie County, MTMT1,11262−60%

3034Bethel Census Area, AKAK18,39161+15%

3035Kittson County, MNMN4,03161−26%

3036Niobrara County, WYWY2,34161−15%

3037Mahnomen County, MNMN5,15360−41%

3038Chugach Census Area, AKAK6,55360–

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%

3052Jones County, SDSD91349+145%

3053Loving County, TXTX5249–

3054Concho County, TXTX3,60749−96%

3055Sioux County, NENE1,18848−13%

3056Towner County, NDND2,04048−34%

3057Hyde County, SDSD1,19148+37%

3058Throckmorton County, TXTX1,55448−47%

3059Stanton County, KSKS1,98648−45%

3060Day County, SDSD5,48447−86%

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

3062Treasure County, MTMT72846−87%

3063Benson County, NDND5,75945+7%

3064Lipscomb County, TXTX2,95545−77%

3065Golden Valley County, MTMT84444−40%

3066North Slope, AKAK10,58243+231%

3067Grant County, NENE56143−59%

3068Meagher County, MTMT2,13742−34%

3069Wibaux County, MTMT88541−68%

3070Motley County, TXTX1,04341−42%

3071Emery County, UTUT10,17741−83%

3072Boyd County, NENE1,67440−2%

3073Jackson County, SDSD2,66639+680%

3074Divide County, NDND2,11038−36%

3075Griggs County, NDND2,23938+36%

3076Keweenaw County, MIMI2,18638−65%

3077Sterling County, TXTX1,34935−80%

3078Esmeralda County, NVNV72935−72%

3079Pierce County, NDND3,83834−61%

3080Garfield County, NENE1,71032−75%

3081McPherson County, SDSD2,34732−48%

3082Lane County, KSKS1,50831−75%

3083Cook County, MNMN5,52231−63%

3084Greeley County, KSKS1,18231−54%

3085Loup County, NENE57031−37%

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, NENE396230%

3092Banner County, NENE68623−61%

3093Irion County, TXTX1,46323−83%

3094McPherson County, NENE36923+188%

3095Foard County, TXTX1,04422−74%

3096Blaine County, NENE45821−25%

3097Pershing County, NVNV6,42120−93%

3098Copper River Census Area, AKAK2,66619–

3099Sheridan County, NDND1,29619−17%

3100Menard County, TXTX1,95619−98%

3101Schleicher County, TXTX2,24519−96%

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%

3108Steele County, NDND1,79712−37%

3109King County, TXTX19212−48%

3110Daggett County, UTUT93412+50%

3111Burke County, NDND2,13211−61%

3112San Juan County, COCO81311–

3113Dillingham Census Area, AKAK4,48310−57%

3114Lake and Peninsula, AKAK1,3579+350%

3115Mineral County, COCO9109−84%

3116Sioux County, NDND3,6678−33%

3117Menominee County, WIWI4,1998–

3118Eddy County, NDND2,3297−77%

3119Mellette County, SDSD2,1377−42%

3120Jackson County, COCO1,2116−94%

3121Northwest Arctic, AKAK7,0955−58%

3122Sierra County, CACA3,0985−96%

3123Aleutians East, AKAK3,4794−91%

3124Wrangell, AKAK2,0074−95%

3125Yakutat, AKAK6724−60%

3126Thomas County, NENE6394−88%

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 2026-09-11 · DATA: US CENSUS BUREAU DECENNIAL CENSUS