Which county has the highest median year built?

McKenzie County, North Dakota ranks #1 with 2005 (2020 American Community Survey).

What are the top 5 counties by median year built?

McKenzie County, North Dakota, Cameron Parish, Louisiana, Sumter County, Florida, Hays County, Texas, Dallas County, Iowa.

How many counties are in this ranking?

3,134 counties qualify after filtering for population minimums and data availability. The ranking covers 2020 ACS 5-year data.

How is median year built measured?

Median year that housing structures were built. Source: US Census Bureau, American Community Survey 5-year estimates (2020).

RANKING · 2020 CENSUS · 134 SHOWN OF 3,134

Newest housing stock, US counties · 2020

US counties ranked by median year housing was built (2023 ACS).

Flip the list · Oldest housing stock, US counties →

All statesAll rankings

SAME RANKING BYCities States Metros ZIP codes

YEAR1990 2010 2020 2024

RANKPLACESTATEPOPMEDIAN YEAR BUILTVS 2000

3001Lee County, IAIA32,3061955–

3002Osceola County, IAIA5,9801955–

3003Shelby County, IAIA11,6891955–

3004Clark County, KSKS1,9001955–

3005Elk County, KSKS2,4581955–

3006Marshall County, KSKS9,8521955–

3007Morris County, KSKS5,3481955–

3008Norton County, KSKS5,2881955–

3009Rooks County, KSKS4,6461955–

3010Woodson County, KSKS3,1181955–

3011Wyoming County, NYNY39,7411955–

3012Milwaukee County, WIWI924,2161955–

3013Berkshire County, MAMA128,2241954–

3014Deer Lodge County, MTMT9,7091954–

3015Prairie County, MTMT1,1121954–

3016Dawes County, NENE7,8581954–

3017Dixon County, NENE5,6021954–

3018Fulton County, NYNY52,2161954–

3019Schenectady County, NYNY162,5811954–

3020Cambria County, PAPA128,9681954–

3021Lackawanna County, PAPA216,5021954–

3022Bon Homme County, SDSD7,2441954–

3023Kenedy County, TXTX3191954–

3024Loving County, TXTX521954–

3025Ohio County, WVWV40,4961954–

3026Niobrara County, WYWY2,3411954–

3027Blaine County, NENE4581954–

3028District of Columbia, DCDC693,6451954–

3029Warren County, ILIL16,2221954–

3030Cass County, ININ37,8361954–

3031Butler County, IAIA14,0491954–

3032Emmet County, IAIA9,1071954–

3033Franklin County, IAIA9,8681954–

3034Hamilton County, IAIA14,9441954–

3035Page County, IAIA14,8561954–

3036Wright County, IAIA12,8011954–

3037Pawnee County, KSKS5,9911954–

3038Pratt County, KSKS9,1171954–

3039Russell County, KSKS6,5811954–

3040Decatur County, KSKS2,7161953–

3041Harding County, NMNM6171953–

3042Chautauqua County, NYNY124,1261953–

3043Campbell County, SDSD1,3771953–

3044Clark County, SDSD4,0311953–

3045Douglas County, SDSD2,8881953–

3046Gregory County, SDSD4,0371953–

3047Jerauld County, SDSD1,6541953–

3048Greene County, ILIL11,3131953–

3049Benton County, ININ8,8831953–

3050Cass County, IAIA12,9601953–

3051Cherokee County, IAIA11,3691953–

3052Dickinson County, KSKS18,6371953–

3053Rice County, KSKS9,2661953–

3054Burt County, NENE6,6781953–

3055Faribault County, MNMN13,8881952–

3056Clay County, NENE6,1701952–

3057Custer County, NENE10,5001952–

3058Fillmore County, NENE5,4581952–

3059Garden County, NENE1,8041952–

3060Johnson County, NENE5,2181952–

3061Sherman County, NENE2,9241952–

3062Thayer County, NENE4,8421952–

3063Bronx County, NYNY1,406,3321952–

3064Orleans County, NYNY39,8251952–

3065Queens County, NYNY2,358,1821952–

3066Northumberland County, PAPA89,9201952–

3067Hanson County, SDSD3,4561952–

3068Greene County, IAIA8,6581952–

3069Sedgwick County, COCO2,2471952–

3070Randolph County, ININ24,4381952–

3071Rush County, ININ16,7671952–

3072Monona County, IAIA8,5391952–

3073Tama County, IAIA16,7961952–

3074Mitchell County, KSKS5,5901952–

3075Rush County, KSKS2,8451952–

3076Stafford County, KSKS4,0051952–

3077Herkimer County, NYNY59,2191952–

3078Garfield County, WAWA2,4161952–

3079Nuckolls County, NENE4,1001951–

3080McKean County, PAPA38,9841951–

3081Sheridan County, NENE4,8091951–

3082Hardin County, IAIA16,4551951–

3083Sac County, IAIA9,5251951–

3084Worth County, IAIA7,3381951–

3085Rawlins County, KSKS2,4311951–

3086Taylor County, IAIA5,8351950–

3087Lac qui Parle County, MNMN6,7041950–

3088Boone County, NENE5,3551950–

3089Nemaha County, NENE7,1021950–

3090Webster County, NENE3,3361950–

3091New York County, NYNY1,664,8621950–

3092Covington, VAVA5,6801950–

3093Audubon County, IAIA5,5091950–

3094Harrison County, IAIA14,6231950–

3095Cheyenne County, KSKS2,6041950–

3096Edwards County, KSKS2,6401950–

3097Smith County, KSKS3,5661950–

3098Washington County, KSKS5,5331950–

3099Terrell County, TXTX7021949–

3100Greeley County, NENE2,1541949–

3101Howard County, IAIA9,4151949–

3102Ida County, IAIA6,7771949–

3103Montgomery County, IAIA10,0021949–

3104Pocahontas County, IAIA6,8191949–

3105Deuel County, NENE1,8621948–

3106Franklin County, NENE2,7951948–

3107Hayes County, NENE8211948–

3108Valley County, NENE4,0941948–

3109Motley County, TXTX1,0431948–

3110Philadelphia County, PAPA1,574,2811948–

3111Keokuk County, IAIA9,7971947–

3112Jefferson County, NENE7,0701946–

3113Osborne County, KSKS3,2851946–

3114Clay County, KSKS7,9901946–

3115Nance County, NENE3,2901946–

3116Baltimore, MDMD569,9971945–

3117Furnas County, NENE4,5241945–

3118Montgomery County, NYNY50,0461945–

3119Miner County, SDSD2,2811945–

3120San Francisco County, CACA826,0791944–

3121Richardson County, NENE7,5301944–

3122Adams County, IAIA3,6171944–

3123Jewell County, KSKS2,8301944–

3124Schuylkill County, PAPA145,0851943–

3125Republic County, KSKS4,6401943–

3126Suffolk County, MAMA791,8911942–

3127Cloud County, KSKS8,8331942–

3128Pawnee County, NENE2,5101940–

3129Comanche County, KSKS1,6731940–

3130Kings County, NYNY2,653,9630–

3131St. Louis, MOMO278,1440–

3132Sioux County, NENE1,1880–

3133Kalawao County, HIHI820–

3134Lincoln County, KSKS2,8610–

SHOWING 3,001–3,134 OF 3,134

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