RANKING · 1990 CENSUS · 122 SHOWN OF 3,122

Least racially diverse, US counties · 1990

US counties with the lowest CensusEasy Diversity Score, where most residents share the same race or ethnicity (2023 ACS).

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SAME RANKING BYCities States Metros ZIP codes

RELATEDOldest by median age Youngest by median age Most foreign-born residents Highest uninsured rate Most women Most men

YEAR1990 2000 2010 2020 2024

RANKPLACESTATEPOPDIVERSITY SCOREVS 2000

3001Reagan County, TXTX3,16672+9%

3002Atascosa County, TXTX53,59072+18%

3003Brooks County, TXTX6,57972+288%

3004Costilla County, COCO3,67972+34%

3005Ector County, TXTX173,80172+7%

3006Travis County, TXTX1,389,67073+1%

3007Andrews County, TXTX18,91473+14%

3008Saguache County, COCO6,73273+16%

3009Colusa County, CACA21,83673+13%

3010Cameron County, TXTX433,94673+123%

3011Hawaii County, HIHI210,04373−5%

3012Robertson County, TXTX17,83973+6%

3013Santa Fe County, NMNM156,90773+14%

3014Pinal County, AZAZ539,38073+21%

3015Falls County, TXTX17,86973+1%

3016Suffolk County, MAMA791,89173−6%

3017Crosby County, TXTX4,85273+10%

3018Calhoun County, TXTX19,59973+7%

3019Prince George's County, MDMD970,37473+12%

3020Harding County, NMNM61773+17%

3021Liberty County, GAGA70,31373−0%

3022Upton County, TXTX3,13174+16%

3023San Joaquin County, CACA823,81574−7%

3024Bernalillo County, NMNM667,60174+9%

3025Terry County, TXTX11,72074+9%

3026Kenedy County, TXTX31974+78%

3027Refugio County, TXTX6,65774+5%

3028Hendry County, FLFL48,27674−4%

3029Duval County, TXTX9,40274+186%

3030San Juan County, NMNM120,34074+56%

3031Philadelphia County, PAPA1,574,28174−3%

3032Passaic County, NJNJ531,62474−3%

3033Wharton County, TXTX42,06074+0%

3034Hudspeth County, TXTX3,43374+63%

3035Gaines County, TXTX23,95674+21%

3036Lynn County, TXTX6,01774+14%

3037Ward County, TXTX11,12575+11%

3038Willacy County, TXTX19,97175+145%

3039Denver County, COCO740,61375+1%

3040Matagorda County, TXTX36,46375+0%

3041Quay County, NMNM8,45475+22%

3042Gonzales County, TXTX20,15975+6%

3043Socorro County, NMNM15,83875+18%

3044Sutton County, TXTX3,20375+20%

3045San Bernardino County, CACA2,224,09175−2%

3046Valencia County, NMNM82,01376+21%

3047Karnes County, TXTX15,01876+2%

3048Solano County, CACA455,37676−6%

3049Moore County, TXTX21,89176+18%

3050Bee County, TXTX32,51576+7%

3051San Patricio County, TXTX72,05376+14%

3052Yuma County, AZAZ224,44976+15%

3053Hidalgo County, TXTX921,54976+199%

3054Deaf Smith County, TXTX18,62676+22%

3055Guadalupe County, NMNM4,34376+107%

3056Franklin County, WAWA102,61276+13%

3057Sandoval County, NMNM159,56576+23%

3058Webb County, TXTX281,22476+485%

3059Dallas County, TXTX2,661,39776−7%

3060Santa Cruz County, AZAZ50,02077+100%

3061Jim Wells County, TXTX38,80477+67%

3062Santa Clara County, CACA1,914,39177−6%

3063Madera County, CACA167,92777+12%

3064El Paso County, TXTX877,85877+79%

3065Chattahoochee County, GAGA8,46577+8%

3066Dimmit County, TXTX8,02477+144%

3067Yoakum County, TXTX7,43877+20%

3068Nueces County, TXTX352,99277+16%

3069Zapata County, TXTX13,75377+143%

3070Schleicher County, TXTX2,24578+23%

3071Hoke County, NCNC56,93978+7%

3072Starr County, TXTX66,31978+1280%

3073Cook County, ILIL5,194,62578−5%

3074Maverick County, TXTX58,82378+724%

3075Swisher County, TXTX6,70378+18%

3076Winkler County, TXTX7,54078+21%

3077Waller County, TXTX69,85878+0%

3078Kern County, CACA927,06878+8%

3079Taos County, NMNM34,56478+32%

3080Adams County, WAWA21,48878+24%

3081Rio Arriba County, NMNM39,83278+131%

3082Bexar County, TXTX2,160,08879+12%

3083Culberson County, TXTX2,26779+59%

3084Kalawao County, HIHI8279+10%

3085Caldwell County, TXTX55,15079+10%

3086La Salle County, TXTX6,51779+74%

3087Crane County, TXTX4,55479+20%

3088San Benito County, CACA70,08279+20%

3089Frio County, TXTX18,82380+57%

3090Val Verde County, TXTX47,83580+72%

3091San Miguel County, NMNM26,26080+95%

3092Mora County, NMNM4,05180+123%

3093Dawson County, TXTX11,77680+12%

3094Zavala County, TXTX9,03780+315%

3095Hale County, TXTX31,81980+16%

3096Essex County, NJNJ896,37981−1%

3097Cochran County, TXTX2,54681+19%

3098Uvalde County, TXTX24,96381+44%

3099Imperial County, CACA181,41181+58%

3100Kleberg County, TXTX30,31581+36%

3101Hudson County, NJNJ735,03381−3%

3102Floyd County, TXTX4,88181+22%

3103Pecos County, TXTX14,56081+29%

3104Harris County, TXTX5,045,02681−2%

3105Merced County, CACA297,26082+10%

3106Tulare County, CACA485,14682+21%

3107Martin County, TXTX5,28482+30%

3108Cibola County, NMNM26,80782+29%

3109Fort Bend County, TXTX975,19182−3%

3110Robeson County, NCNC119,94183+16%

3111Castro County, TXTX7,29583+28%

3112Alameda County, CACA1,636,63083−6%

3113Kings County, CACA154,32784+12%

3114Monterey County, CACA433,72984+15%

3115Fresno County, CACA1,035,45685+10%

3116Aleutians East, AKAK3,47985+3%

3117San Francisco County, CACA826,07985+3%

3118Queens County, NYNY2,358,18286−6%

3119New York County, NYNY1,664,86287+5%

3120Kings County, NYNY2,653,96389+2%

3121Los Angeles County, CACA9,694,93490+9%

3122Bronx County, NYNY1,406,33294+20%

SHOWING 3,001–3,122 OF 3,122

Download CSV (full list, 3,122 rows)How this score is calculated

UPDATED 2026-06-02 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES