Which county has the highest population density?

New York County, New York ranks #1 with 73,478 (2025 Census Population Estimates).

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?

3,144 counties qualify after filtering for population minimums and data availability. The ranking covers 2025 Census population estimates.

How is population density measured?

Residents per square mile of land area. Source: US Census Bureau, Population Estimates Program (2025).

RANKING · 2025 ESTIMATES · 144 SHOWN OF 3,144

Most densely populated, US counties

US counties ranked by residents per square mile (2025).

Flip the list · Most sparsely populated, US counties →

All statesAll rankings

SAME RANKING BYCities States Metros

RANKPLACESTATEPOPPOPULATION DENSITYVS –

3001Kodiak Island, AKAK12,3872–

3002Sublette County, WYWY8,9292–

3003Fallon County, MTMT2,9592–

3004Beaverhead County, MTMT10,0432–

3005Golden Valley County, NDND1,8082–

3006Humboldt County, NVNV17,2672–

3007Inyo County, CACA18,1582–

3008Carbon County, WYWY14,0132–

3009Kidder County, NDND2,3932–

3010Bristol Bay, AKAK8472–

3011Schleicher County, TXTX2,2452–

3012Dundy County, NENE1,5682–

3013Throckmorton County, TXTX1,5542–

3014Divide County, NDND2,1102–

3015Owyhee County, IDID12,6612–

3016Rosebud County, MTMT8,2532–

3017Briscoe County, TXTX1,4742–

3018Gilliam County, OROR1,9712–

3019Mellette County, SDSD2,1372–

3020Blaine County, MTMT6,8602–

3021Wallace County, KSKS1,4412–

3022Grant County, OROR7,0752–

3023Corson County, SDSD3,7812–

3024Brewster County, TXTX9,4582–

3025Greeley County, KSKS1,1822–

3026Valley County, MTMT7,3851–

3027Foard County, TXTX1,0441–

3028Chouteau County, MTMT5,8651–

3029Wheatland County, MTMT2,1001–

3030Sully County, SDSD1,4791–

3031Sterling County, TXTX1,3491–

3032Guadalupe County, NMNM4,3431–

3033Jackson County, SDSD2,6661–

3034Alpine County, CACA1,0431–

3035Presidio County, TXTX5,4331–

3036Irion County, TXTX1,4631–

3037Hyde County, SDSD1,1911–

3038Wheeler County, NENE7891–

3039Liberty County, MTMT1,9571–

3040Cottle County, TXTX1,2241–

3041Daggett County, UTUT9341–

3042Sheridan County, NDND1,2961–

3043Grant County, NDND2,2061–

3044Baca County, COCO3,3471–

3045Stonewall County, TXTX1,1861–

3046Glasscock County, TXTX1,1281–

3047Rock County, NENE1,2591–

3048Butte County, IDID2,7831–

3049Camas County, IDID1,3161–

3050Ziebach County, SDSD2,3891–

3051Aleutians West Census Area, AKAK5,2401–

3052Oldham County, TXTX1,7831–

3053Mineral County, NVNV4,4071–

3054Logan County, NENE6691–

3055Petersburg, AKAK3,3941–

3056Judith Basin County, MTMT2,1621–

3057Hayes County, NENE8211–

3058Hidalgo County, NMNM3,9291–

3059Daniels County, MTMT1,6121–

3060Cimarron County, OKOK2,0591–

3061Prince of Wales-Hyder Census Area, AKAK5,7771–

3062Lander County, NVNV5,8721–

3063Pershing County, NVNV6,4211–

3064Garden County, NENE1,8041–

3065Motley County, TXTX1,0431–

3066Wayne County, UTUT2,5871–

3067Mineral County, COCO9101–

3068Keya Paha County, NENE7921–

3069Garfield County, UTUT5,2561–

3070Loup County, NENE5701–

3071Lake County, OROR8,1871–

3072Union County, NMNM3,8441–

3073Haakon County, SDSD1,8021–

3074Wibaux County, MTMT8851–

3075Perkins County, SDSD2,8531–

3076Crockett County, TXTX2,7691–

3077White Pine County, NVNV8,6611–

3078Cheyenne County, COCO1,7131–

3079Hooker County, NENE6861–

3080Custer County, IDID4,6361–

3081Jones County, SDSD9131–

3082Roberts County, TXTX8671–

3083Cherry County, NENE5,5611–

3084Billings County, NDND1,0711–

3085Banner County, NENE6861–

3086Thomas County, NENE6391–

3087Meagher County, MTMT2,1371–

3088Niobrara County, WYWY2,3411–

3089Haines, AKAK2,0681–

3090Wheeler County, OROR1,4721–

3091Phillips County, MTMT4,2031–

3092Kiowa County, COCO1,4121–

3093Wrangell, AKAK2,0071–

3094Jeff Davis County, TXTX1,7111–

3095Hudspeth County, TXTX3,4331–

3096Jackson County, COCO1,2111–

3097Kent County, TXTX6741–

3098Treasure County, MTMT7281–

3099Harney County, OROR7,3801–

3100Grant County, NENE5611–

3101Golden Valley County, MTMT8441–

3102De Baca County, NMNM1,6471–

3103Chugach Census Area, AKAK6,5531–

3104Hinsdale County, COCO7531–

3105McCone County, MTMT1,7201–

3106Edwards County, TXTX1,3701–

3107Blaine County, NENE4581–

3108Prairie County, MTMT1,1121–

3109Borden County, TXTX5671–

3110Culberson County, TXTX2,2671–

3111Sioux County, NENE1,1881–

3112Arthur County, NENE3961–

3113Catron County, NMNM3,8271–

3114Powder River County, MTMT1,7811–

3115Slope County, NDND6281–

3116Harding County, SDSD1,3310–

3117Aleutians East, AKAK3,4790–

3118McMullen County, TXTX5440–

3119Kusilvak Census Area, AKAK7,9320–

3120Bethel Census Area, AKAK18,3910–

3121Eureka County, NVNV1,8670–

3122Clark County, IDID7830–

3123McPherson County, NENE3690–

3124Nome Census Area, AKAK9,8300–

3125Carter County, MTMT1,3830–

3126Lincoln County, NVNV4,3200–

3127Hoonah-Angoon Census Area, AKAK2,2710–

3128Petroleum County, MTMT5480–

3129Terrell County, TXTX7020–

3130Southeast Fairbanks Census Area, AKAK7,2700–

3131Harding County, NMNM6170–

3132Garfield County, MTMT1,1480–

3133Dillingham Census Area, AKAK4,4830–

3134Kenedy County, TXTX3190–

3135King County, TXTX1920–

3136Esmeralda County, NVNV7290–

3137Northwest Arctic, AKAK7,0950–

3138Denali, AKAK1,6160–

3139North Slope, AKAK10,5820–

3140Copper River Census Area, AKAK2,6660–

3141Yakutat, AKAK6720–

3142Loving County, TXTX520–

3143Lake and Peninsula, AKAK1,3570–

3144Yukon-Koyukuk Census Area, AKAK5,0280–

SHOWING 3,001–3,144 OF 3,144

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UPDATED 2026-07-15 · DATA: US CENSUS BUREAU POPULATION ESTIMATES