Which county has the highest median age?

Kalawao County, Hawaii ranks #1 with 62.6 (1990 Decennial Census).

What are the top 5 counties by median age?

Kalawao County, Hawaii, Llano County, Texas, Charlotte County, Florida, Highlands County, Florida, Sierra County, New Mexico.

How many counties are in this ranking?

3,122 counties qualify after filtering for population minimums and data availability. The ranking covers 1990 Decennial Census data.

How is median age measured?

Median age of all residents. Source: US Census Bureau, 1990 Decennial Census.

RANKING · 1990 CENSUS · 122 SHOWN OF 3,122

Oldest by median age, US counties · 1990

US counties ranked by median age of residents (1990 ACS).

Flip the list · Youngest by median age, US counties →

All statesAll rankings

SAME RANKING BYCities States Metros ZIP codes

YEAR1990 2000 2010 2020 2024

RANKPLACESTATEPOPMEDIAN AGEVS –

3001Bell County, TXTX402,24828.1–

3002Merced County, CACA297,26028.1–

3003Big Horn County, MTMT12,75228.1–

3004Nodaway County, MOMO20,17428.1–

3005Meade County, KYKY30,69928.1–

3006Bingham County, IDID51,15328.1–

3007Dimmit County, TXTX8,02428.0–

3008Tooele County, UTUT87,46128.0–

3009East Carroll Parish, LALA6,76028.0–

3010Humphreys County, MSMS7,00128.0–

3011Watauga County, NCNC54,78628.0–

3012Wasatch County, UTUT38,51427.9–

3013Stearns County, MNMN164,11027.9–

3014Hardin County, KYKY113,48227.9–

3015Elmore County, IDID29,46527.9–

3016Salt Lake County, UTUT1,220,91627.9–

3017Franklin County, IDID15,88927.8–

3018Holmes County, MSMS15,46527.8–

3019Boone County, MOMO191,74627.8–

3020Champaign County, ILIL209,97227.8–

3021Holmes County, OHOH44,97027.7–

3022Nacogdoches County, TXTX66,03527.7–

3023Kleberg County, TXTX30,31527.7–

3024Blue Earth County, MNMN70,63427.7–

3025Christian County, KYKY70,11527.7–

3026Willacy County, TXTX19,97127.6–

3027Fairbanks North Star, AKAK93,97227.6–

3028Manassas Park, VAVA16,56027.6–

3029Cameron County, TXTX433,94627.6–

3030Norfolk, VAVA231,01327.5–

3031Latah County, IDID41,84227.5–

3032Grand Forks County, NDND74,50127.4–

3033McDonough County, ILIL25,91627.4–

3034Camden County, GAGA60,14327.3–

3035DeKalb County, ILIL101,83527.3–

3036Tompkins County, NYNY104,04727.3–

3037Adair County, MOMO25,68427.3–

3038Johnson County, IAIA160,04427.3–

3039Cumberland County, NCNC338,47327.3–

3040Finney County, KSKS37,50527.2–

3041Lake and Peninsula, AKAK1,35727.2–

3042Long County, GAGA21,55727.1–

3043Payne County, OKOK83,88927.1–

3044Dillingham Census Area, AKAK4,48327.1–

3045Centre County, PAPA157,39327.0–

3046Pulaski County, MOMO54,44227.0–

3047Zavala County, TXTX9,03727.0–

3048Uinta County, WYWY20,72826.9–

3049Box Elder County, UTUT65,32026.9–

3050Aleutians West Census Area, AKAK5,24026.8–

3051Tippecanoe County, ININ190,45626.8–

3052Hays County, TXTX304,39026.7–

3053Navajo County, AZAZ109,94626.7–

3054Albany County, WYWY38,55826.6–

3055Reagan County, TXTX3,16626.6–

3056North Slope, AKAK10,58226.6–

3057Jackson County, ILIL52,50126.5–

3058Rich County, UTUT2,68726.5–

3059Sharkey County, MSMS3,09726.5–

3060Monroe County, ININ143,34526.5–

3061Bolivar County, MSMS28,26226.5–

3062Rolette County, NDND11,68826.5–

3063Geary County, KSKS36,33826.4–

3064Nome Census Area, AKAK9,83026.4–

3065Jefferson County, IDID35,29726.4–

3066Hidalgo County, TXTX921,54926.3–

3067Coconino County, AZAZ144,36826.3–

3068Lee County, ALAL189,88126.3–

3069Brookings County, SDSD37,63526.3–

3070Bulloch County, GAGA86,94926.3–

3071Morgan County, UTUT13,38326.3–

3072Johnson County, MOMO56,67026.2–

3073Rowan County, KYKY24,47626.1–

3074Dewey County, SDSD5,41926.0–

3075Millard County, UTUT14,05726.0–

3076Uintah County, UTUT38,27826.0–

3077Story County, IAIA101,29125.9–

3078Douglas County, KSKS120,92025.9–

3079Lafayette County, MSMS59,59725.9–

3080Montgomery County, VAVA98,43425.7–

3081Mecosta County, MIMI42,32025.7–

3082Webb County, TXTX281,22425.7–

3083Maverick County, TXTX58,82325.7–

3084Coryell County, TXTX85,59225.6–

3085Clarke County, GAGA129,92125.6–

3086McKinley County, NMNM68,11925.5–

3087Athens County, OHOH63,19725.5–

3088Emery County, UTUT10,17725.4–

3089Tunica County, MSMS8,81925.3–

3090Bethel Census Area, AKAK18,39125.1–

3091Duchesne County, UTUT20,85625.0–

3092Davis County, UTUT381,22724.8–

3093Ziebach County, SDSD2,38924.8–

3094Vernon Parish, LALA45,09124.7–

3095Lincoln Parish, LALA48,36024.7–

3096Oktibbeha County, MSMS51,89624.7–

3097Onslow County, NCNC217,17524.6–

3098Menominee County, WIWI4,19924.6–

3099Iron County, UTUT67,14124.6–

3100Isabella County, MIMI64,69124.5–

3101Whitman County, WAWA48,51224.4–

3102Sanpete County, UTUT31,45324.2–

3103Harrisonburg, VAVA50,83924.2–

3104Brazos County, TXTX249,08824.1–

3105Liberty County, GAGA70,31324.1–

3106San Juan County, UTUT14,54224.0–

3107Starr County, TXTX66,31924.0–

3108Clay County, SDSD15,03124.0–

3109Riley County, KSKS72,59823.8–

3110Claiborne County, MSMS8,05823.8–

3111Cache County, UTUT145,00023.7–

3112Apache County, AZAZ64,44523.6–

3113Lexington, VAVA7,76923.5–

3114Williamsburg, VAVA15,86123.1–

3115Northwest Arctic, AKAK7,09522.9–

3116Sioux County, NDND3,66722.9–

3117Chattahoochee County, GAGA8,46522.6–

3118Utah County, UTUT759,85922.5–

3119Buffalo County, SDSD1,80222.2–

3120Radford, VAVA17,24321.9–

3121Todd County, SDSD8,86320.6–

3122Madison County, IDID55,17220.0–

SHOWING 3,001–3,122 OF 3,122

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UPDATED 2026-07-15 · DATA: US CENSUS BUREAU DECENNIAL CENSUS