Which county has the highest average household size?

Oglala Lakota County, South Dakota ranks #1 with 4.97 (2020 Decennial Census).

What are the top 5 counties by average household size?

Oglala Lakota County, South Dakota, Kusilvak Census Area, Alaska, Wheeler County, Georgia, Northwest Arctic, Alaska, Starr County, Texas.

How many counties are in this ranking?

3,135 counties qualify after filtering for population minimums and data availability. The ranking covers 2020 Decennial Census data.

How is average household size measured?

Average number of people per household. Source: US Census Bureau, 2020 Decennial Census.

RANKING · 2020 CENSUS · 135 SHOWN OF 3,135

Largest households, US counties · 2020

US counties ranked by average household size (2020 ACS).

All statesAll rankings

SAME RANKING BYCities States Metros ZIP codes

YEAR2010 2020 2024

RANKPLACESTATEPOPAVERAGE HOUSEHOLD SIZEVS 2010

3001Cheyenne County, NENE9,5282.12−8%

3002Foster County, NDND3,2122.11−6%

3003Iosco County, MIMI25,2662.11−9%

3004Presque Isle County, MIMI13,1282.11−2%

3005Coos County, NHNH31,3432.11−2%

3006Hand County, SDSD3,1212.11−4%

3007Summers County, WVWV11,5322.11−15%

3008Fremont County, COCO50,0392.11+3%

3009Jo Daviess County, ILIL21,5942.11−6%

3010Pocahontas County, IAIA6,8192.11−3%

3011Clay County, KSKS7,9902.11−9%

3012McPherson County, NENE3692.11−12%

3013La Paz County, AZAZ16,7112.10+6%

3014Grant County, NDND2,2062.10+3%

3015Monroe County, ARAR6,2442.10−13%

3016Big Stone County, MNMN5,0542.10−5%

3017Musselshell County, MTMT5,5822.10−1%

3018Pembina County, NDND6,5682.10−5%

3019Curry County, OROR22,6212.10−2%

3020McCormick County, SCSC10,2152.10−3%

3021Throckmorton County, TXTX1,5542.10−7%

3022Bayfield County, WIWI16,7872.10+0%

3023Burnett County, WIWI17,2232.10+1%

3024Richardson County, NENE7,5302.10−4%

3025Bent County, COCO5,7162.10−9%

3026Gulf County, FLFL15,9432.10−16%

3027Rawlins County, KSKS2,4312.10−4%

3028Iron County, MIMI11,7572.09−3%

3029Sherman County, NENE2,9242.09−9%

3030Clay County, NCNC12,2392.09−7%

3031Wheeler County, OROR1,4722.09+1%

3032Elk County, PAPA29,9262.09−10%

3033Jerauld County, SDSD1,6542.09−7%

3034Adams County, WIWI21,7522.09−0%

3035Florence County, WIWI4,7482.09−5%

3036Gilpin County, COCO6,0732.09+3%

3037Emmet County, IAIA9,1072.09−9%

3038Gosper County, NENE1,8032.09−16%

3039Marinette County, WIWI42,5742.09−0%

3040Adams County, NDND2,2752.08+0%

3041Campbell County, SDSD1,3772.08−11%

3042Jones County, SDSD9132.08−9%

3043Golden Valley County, NDND1,8082.08+1%

3044Trinity County, CACA15,7202.08−6%

3045Hinsdale County, COCO7532.08+8%

3046Lemhi County, IDID8,4742.08−6%

3047Norton, VAVA3,4772.08−4%

3048Eddy County, NDND2,3292.07−12%

3049Emmons County, NDND3,2152.07−6%

3050Roscommon County, MIMI23,9142.07−5%

3051Koochiching County, MNMN11,5872.07−3%

3052New York County, NYNY1,664,8622.07−1%

3053Lake County, OROR8,1872.07−4%

3054Day County, SDSD5,4842.07−5%

3055Lake County, TNTN6,2492.07−15%

3056Republic County, KSKS4,6402.07+2%

3057Cavalier County, NDND3,4972.06−8%

3058Divide County, NDND2,1102.06+5%

3059Mariposa County, CACA16,9182.06−10%

3060Lane County, KSKS1,5082.06−6%

3061Keith County, NENE8,1002.06−6%

3062Cheyenne County, KSKS2,6042.06−6%

3063Comanche County, KSKS1,6732.06−4%

3064Gove County, KSKS2,6312.06−10%

3065Jefferson County, WAWA33,9702.06+2%

3066Aitkin County, MNMN16,2522.05+0%

3067St. Louis, MOMO278,1442.05−6%

3068Powell County, MTMT7,1572.05−14%

3069Logan County, NDND1,8592.05−9%

3070Blaine County, OKOK8,5152.05−21%

3071Gilliam County, OROR1,9712.05+1%

3072Fall River County, SDSD7,4672.05+7%

3073Sawyer County, WIWI18,8462.05+0%

3074Jackson County, COCO1,2112.05−3%

3075Cook County, MNMN5,5222.04+2%

3076Park County, MTMT18,2142.04−7%

3077Sargent County, NDND3,7112.04−9%

3078Sullivan County, PAPA5,8562.04−18%

3079Dolores County, COCO2,4662.04−20%

3080Sumter County, FLFL157,7722.04+2%

3081Cherokee County, IAIA11,3692.04−8%

3082Jewell County, KSKS2,8302.04−6%

3083Lexington, VAVA7,7692.04−4%

3084Hot Springs County, WYWY4,6002.04−5%

3085Montmorency County, MIMI9,8422.03−11%

3086Ontonagon County, MIMI5,8232.03−1%

3087Grant County, OROR7,0752.03−7%

3088Door County, WIWI30,6162.03−0%

3089Garden County, NENE1,8042.02+2%

3090Baca County, COCO3,3472.02−9%

3091Alcona County, MIMI10,5562.01−17%

3092Traverse County, MNMN3,1302.01−6%

3093Osborne County, KSKS3,2852.01−9%

3094Audubon County, IAIA5,5092.01−9%

3095Dickinson County, IAIA18,0772.01−0%

3096Trego County, KSKS2,7402.01−12%

3097Deer Lodge County, MTMT9,7092.00+4%

3098Menard County, TXTX1,9562.00−13%

3099Las Animas County, COCO14,3912.00−16%

3100Gogebic County, MIMI14,2851.99−4%

3101Mackinac County, MIMI11,2361.99−11%

3102Lake County, MNMN10,7461.99−3%

3103Atchison County, MOMO5,1751.99−12%

3104Barnes County, NDND10,5731.99−10%

3105Lancaster County, VAVA10,9951.99−3%

3106Hancock County, GAGA8,6821.99−27%

3107Rush County, KSKS2,8451.99−3%

3108Esmeralda County, NVNV7291.99+13%

3109Vilas County, WIWI23,7611.99−2%

3110Sierra County, NMNM11,3951.98−20%

3111San Juan County, WAWA18,5771.98+2%

3112Mora County, NMNM4,0511.97−27%

3113Price County, WIWI13,9881.97−6%

3114Blaine County, NENE4581.97−12%

3115Coke County, TXTX3,4121.97−19%

3116Decatur County, KSKS2,7161.96+3%

3117Issaquena County, MSMS1,2631.96−36%

3118Carter County, MTMT1,3831.96−11%

3119Daniels County, MTMT1,6121.96−8%

3120Towner County, NDND2,0401.96−8%

3121Wheeler County, NENE7891.95−13%

3122Nelson County, NDND2,9631.95−9%

3123Wells County, NDND3,7291.95−4%

3124Keweenaw County, MIMI2,1861.94−13%

3125Colfax County, NMNM12,1841.94−17%

3126Tyrrell County, NCNC3,5371.94−8%

3127Graham County, KSKS2,3711.94−15%

3128Iron County, WIWI6,1271.94+0%

3129Cameron County, PAPA4,2111.90−19%

3130Loving County, TXTX521.89+2%

3131Sheridan County, NDND1,2961.88−7%

3132McIntosh County, NDND2,4511.88−7%

3133Treasure County, MTMT7281.84−31%

3134Forest County, PAPA6,6141.84−32%

3135Kalawao County, HIHI821.39+26%

SHOWING 3,001–3,135 OF 3,135

1 2 3 4 5 6 7

Download CSV (full list, 3,135 rows)

UPDATED 2026-08-08 · DATA: US CENSUS BUREAU DECENNIAL CENSUS