Which county has the highest population density?

New York County, New York ranks #1 with 67,843 (2000 Decennial Census).

What are the top 5 counties by population density?

New York County, New York, Kings County, New York, Bronx County, New York, Queens County, New York, San Francisco County, California.

How many counties are in this ranking?

3,125 counties qualify after filtering for population minimums and data availability. The ranking covers 2000 Decennial Census data.

How is population density measured?

Residents per square mile of land area. Source: US Census Bureau, 2000 Decennial Census.

RANKING · 2000 CENSUS · 125 SHOWN OF 3,125

Most densely populated, US counties · 2000

US counties ranked by residents per square mile (2000).

Flip the list · Most sparsely populated, US counties →

All statesAll rankings

SAME RANKING BYCities States Metros

YEAR1990 2000 2010 2020 2025

RANKPLACESTATEPOPPOPULATION DENSITYVS 1990

3001Baca County, COCO3,3472−1%

3002Inyo County, CACA18,1582−2%

3003Sheridan County, NDND1,2962−20%

3004Grant County, OROR7,0752+1%

3005Fallon County, MTMT2,9592−9%

3006Rock County, NENE1,2592−13%

3007Dolores County, COCO2,4662+23%

3008Hidalgo County, NMNM3,92920%

3009Cimarron County, OKOK2,0592−5%

3010Grant County, NDND2,2062−20%

3011Lemhi County, IDID8,4742+13%

3012Johnson County, WYWY8,9082+15%

3013Corson County, SDSD3,78120%

3014Irion County, TXTX1,4632+9%

3015Humboldt County, NVNV17,2672+25%

3016Beaverhead County, MTMT10,0432+9%

3017Blaine County, MTMT6,8602+4%

3018Granite County, MTMT3,6582+11%

3019Alpine County, CACA1,0432+9%

3020Mellette County, SDSD2,1372−3%

3021Gilliam County, OROR1,9712+12%

3022Wheatland County, MTMT2,1002+1%

3023Jackson County, SDSD2,6662+4%

3024Glasscock County, TXTX1,1282−3%

3025Valley County, MTMT7,3852−7%

3026Sully County, SDSD1,4792−2%

3027Guadalupe County, NMNM4,3432+13%

3028Wheeler County, NENE7892−7%

3029Kane County, UTUT8,5972+17%

3030Liberty County, MTMT1,9572−6%

3031Sterling County, TXTX1,3492−3%

3032Chouteau County, MTMT5,8652+10%

3033Hayes County, NENE8211−13%

3034Crockett County, TXTX2,7691+1%

3035Oldham County, TXTX1,7831−4%

3036Motley County, TXTX1,0431−7%

3037San Juan County, COCO8131−25%

3038Brewster County, TXTX9,4581+2%

3039Daniels County, MTMT1,6121−11%

3040Owyhee County, IDID12,6611+27%

3041Logan County, NENE6691−12%

3042Mineral County, NVNV4,4071−22%

3043Garden County, NENE1,8041−7%

3044Daggett County, UTUT9341+33%

3045Butte County, IDID2,7831−1%

3046Ziebach County, SDSD2,3891+13%

3047Keya Paha County, NENE7921−4%

3048Loup County, NENE5701+4%

3049Cheyenne County, COCO1,7131−7%

3050Judith Basin County, MTMT2,1621+2%

3051Aleutians West Census Area, AKAK5,2401−42%

3052Jones County, SDSD9131−10%

3053Haakon County, SDSD1,8021−16%

3054Sublette County, WYWY8,9291+22%

3055Wibaux County, MTMT8851−10%

3056Perkins County, SDSD2,8531−14%

3057Pershing County, NVNV6,4211+54%

3058Banner County, NENE6861−4%

3059Union County, NMNM3,8441+1%

3060Hooker County, NENE6861−1%

3061Lander County, NVNV5,8721−8%

3062White Pine County, NVNV8,6611−1%

3063Cherry County, NENE5,5611−3%

3064Thomas County, NENE6391−14%

3065Edwards County, TXTX1,3701−5%

3066Haines, AKAK2,0681+13%

3067Wayne County, UTUT2,5871+15%

3068Jackson County, COCO1,2111−2%

3069Jeff Davis County, TXTX1,7111+13%

3070De Baca County, NMNM1,6471−1%

3071Grant County, NENE5611−3%

3072Roberts County, TXTX8671−13%

3073Kent County, TXTX6741−15%

3074Mineral County, COCO9101+49%

3075Camas County, IDID1,3161+36%

3076Kiowa County, COCO1,4121−4%

3077Niobrara County, WYWY2,3411−4%

3078Garfield County, UTUT5,2561+19%

3079Lake County, OROR8,1871+3%

3080Wheeler County, OROR1,4721+11%

3081Phillips County, MTMT4,2031−11%

3082Golden Valley County, MTMT8441+14%

3083Custer County, IDID4,6361+5%

3084Treasure County, MTMT7281−1%

3085Blaine County, NENE4581−14%

3086Borden County, TXTX5671−9%

3087Meagher County, MTMT2,1371+6%

3088Culberson County, TXTX2,2671−13%

3089Billings County, NDND1,0711−20%

3090Harney County, OROR7,3801+8%

3091McCone County, MTMT1,7201−13%

3092McMullen County, TXTX5441+4%

3093Hudspeth County, TXTX3,4331+15%

3094Sioux County, NENE1,1881−5%

3095Hinsdale County, COCO7531+69%

3096Prairie County, MTMT1,1121−13%

3097Slope County, NDND6281−15%

3098Arthur County, NENE3961−4%

3099McPherson County, NENE3691−2%

3100Clark County, IDID7831+34%

3101Powder River County, MTMT1,7811−11%

3102Catron County, NMNM3,8271+38%

3103Harding County, SDSD1,3311−19%

3104Terrell County, TXTX7020−23%

3105Carter County, MTMT1,3830−10%

3106Nome Census Area, AKAK9,8300+11%

3107Eureka County, NVNV1,8670+7%

3108Bethel Census Area, AKAK18,3910+17%

3109Lincoln County, NVNV4,3200+10%

3110King County, TXTX1920+1%

3111Aleutians East, AKAK3,4790+9%

3112Harding County, NMNM6170−18%

3113Petroleum County, MTMT5480−5%

3114Kenedy County, TXTX3190−10%

3115Garfield County, MTMT1,1480−20%

3116Esmeralda County, NVNV7290−28%

3117Dillingham Census Area, AKAK4,4830+23%

3118Southeast Fairbanks Census Area, AKAK7,2700+4%

3119Northwest Arctic, AKAK7,0950+18%

3120Denali, AKAK1,6160–

3121Yakutat, AKAK6720–

3122Loving County, TXTX520−37%

3123North Slope, AKAK10,5820+24%

3124Lake and Peninsula, AKAK1,3570+9%

3125Yukon-Koyukuk Census Area, AKAK5,0280−23%

SHOWING 3,001–3,125 OF 3,125

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