Which county has the highest total population?

Los Angeles County, California ranks #1 with 8,863,164 (1990 Decennial Census).

What are the top 5 counties by total population?

Los Angeles County, California, Cook County, Illinois, Harris County, Texas, San Diego County, California, Orange County, California.

How many counties are in this ranking?

3,122 counties qualify after filtering for population minimums and data availability. The ranking covers 1990 Decennial Census data.

How is total population measured?

Total resident population. Source: US Census Bureau, 1990 Decennial Census.

RANKING · 1990 CENSUS · 122 SHOWN OF 3,122

Largest by population, US counties · 1990

The most populous US counties as of the 1990 population estimates.

All statesAll rankings

SAME RANKING BYCities States Metros ZIP codes

YEAR1990 2000 2010 2020 2025

RANKPLACESTATETOTAL POPULATIONVS –

3001Dickens County, TXTX2,571–

3002Catron County, NMNM2,563–

3003Granite County, MTMT2,548–

3004Storey County, NVNV2,526–

3005Niobrara County, WYWY2,499–

3006Aleutians East, AKAK2,464–

3007Garden County, NENE2,460–

3008Stanley County, SDSD2,453–

3009Worth County, MOMO2,440–

3010Jerauld County, SDSD2,425–

3011Steele County, NDND2,420–

3012Clark County, KSKS2,418–

3013Real County, TXTX2,412–

3014Cheyenne County, COCO2,397–

3015Hamilton County, KSKS2,388–

3016Oliver County, NDND2,381–

3017Lane County, KSKS2,375–

3018Glascock County, GAGA2,357–

3019Echols County, GAGA2,334–

3020Stanton County, KSKS2,333–

3021Comanche County, KSKS2,313–

3022Liberty County, MTMT2,295–

3023Ouray County, COCO2,295–

3024Judith Basin County, MTMT2,282–

3025Oldham County, TXTX2,278–

3026McCone County, MTMT2,276–

3027Daniels County, MTMT2,266–

3028Edwards County, TXTX2,266–

3029Webster County, GAGA2,263–

3030De Baca County, NMNM2,252–

3031Menard County, TXTX2,252–

3032Garfield County, WAWA2,248–

3033Cottle County, TXTX2,247–

3034Wheatland County, MTMT2,246–

3035Deuel County, NENE2,237–

3036Ziebach County, SDSD2,220–

3037Quitman County, GAGA2,209–

3038Wayne County, UTUT2,177–

3039Hodgeman County, KSKS2,177–

3040Sheridan County, NDND2,148–

3041Garfield County, NENE2,141–

3042Mellette County, SDSD2,137–

3043Robertson County, KYKY2,124–

3044Haines, AKAK2,117–

3045Golden Valley County, NDND2,108–

3046Powder River County, MTMT2,090–

3047Armstrong County, TXTX2,021–

3048Rock County, NENE2,019–

3049Stonewall County, TXTX2,013–

3050Briscoe County, TXTX1,971–

3051Campbell County, SDSD1,965–

3052Jeff Davis County, TXTX1,946–

3053Gosper County, NENE1,928–

3054Custer County, COCO1,926–

3055Sherman County, OROR1,918–

3056Taliaferro County, GAGA1,915–

3057Issaquena County, MSMS1,909–

3058Throckmorton County, TXTX1,880–

3059Wallace County, KSKS1,821–

3060Meagher County, MTMT1,819–

3061Foard County, TXTX1,794–

3062Greeley County, KSKS1,774–

3063Buffalo County, SDSD1,759–

3064Rich County, UTUT1,725–

3065Gilliam County, OROR1,717–

3066Keweenaw County, MIMI1,701–

3067Hyde County, SDSD1,696–

3068Kiowa County, COCO1,688–

3069Harding County, SDSD1,669–

3070Lake and Peninsula, AKAK1,668–

3071Irion County, TXTX1,629–

3072Jackson County, COCO1,605–

3073Garfield County, MTMT1,589–

3074Sully County, SDSD1,589–

3075Sioux County, NENE1,549–

3076Eureka County, NVNV1,547–

3077Motley County, TXTX1,532–

3078Dolores County, COCO1,504–

3079Carter County, MTMT1,503–

3080Glasscock County, TXTX1,447–

3081Sterling County, TXTX1,438–

3082Bristol Bay, AKAK1,410–

3083Terrell County, TXTX1,410–

3084Wheeler County, OROR1,396–

3085Prairie County, MTMT1,383–

3086Esmeralda County, NVNV1,344–

3087Jones County, SDSD1,324–

3088Piute County, UTUT1,277–

3089Hayes County, NENE1,222–

3090Wibaux County, MTMT1,191–

3091Alpine County, CACA1,113–

3092Billings County, NDND1,108–

3093Keya Paha County, NENE1,029–

3094Roberts County, TXTX1,025–

3095Kent County, TXTX1,010–

3096Harding County, NMNM987–

3097Wheeler County, NENE948–

3098Golden Valley County, MTMT912–

3099Slope County, NDND907–

3100Logan County, NENE878–

3101Treasure County, MTMT874–

3102Banner County, NENE852–

3103Thomas County, NENE851–

3104McMullen County, TXTX817–

3105Borden County, TXTX799–

3106Hooker County, NENE793–

3107Grant County, NENE769–

3108Clark County, IDID762–

3109San Juan County, COCO745–

3110Camas County, IDID727–

3111Daggett County, UTUT690–

3112Loup County, NENE683–

3113Blaine County, NENE675–

3114Mineral County, COCO558–

3115McPherson County, NENE546–

3116Petroleum County, MTMT519–

3117Hinsdale County, COCO467–

3118Arthur County, NENE462–

3119Kenedy County, TXTX460–

3120King County, TXTX354–

3121Kalawao County, HIHI130–

3122Loving County, TXTX107–

SHOWING 3,001–3,122 OF 3,122

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