RANKING · 2024 ACS · 23 SHOWN OF 23

Oldest by median age, Wyoming counties

Wyoming counties ranked by median age of residents (2024 ACS). This list covers the 23 counties in Wyoming that qualify, ranked against each other statewide. The median across all 23 is 42.7. Biggest climber in the top 100 since 2020: Niobrara County, WY, up 5 places to #1.

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SAME RANKING BYCities States Metros ZIP codes

RELATEDLargest foreign-born population Most residents with a disability Largest veteran population Most uninsured people Largest senior population Most unmarried people

YEAR1990 2000 2010 2020 2024

RANKPLACESTATEPOPMEDIAN AGEVS 2000

01▲5Niobrara County, WYWY2,34154.9+28%

02▲1Johnson County, WYWY8,90847.3+10%

03▼2Platte County, WYWY8,63447.0+14%

04Park County, WYWY31,17144.9+13%

05▲4Washakie County, WYWY7,59744.4+13%

06▼1Crook County, WYWY7,85244.1+10%

07Weston County, WYWY6,84044.0+8%

08▲4Sublette County, WYWY8,92943.5+9%

09▼7Hot Springs County, WYWY4,60043.3−2%

10▼2Goshen County, WYWY12,64042.8+7%

11▲2Lincoln County, WYWY21,18042.7+16%

12▼2Sheridan County, WYWY33,24142.7+5%

13▲2Converse County, WYWY13,82442.1+12%

14▼3Big Horn County, WYWY12,02441.7+8%

15▼1Carbon County, WYWY14,01340.6+4%

16▲1Teton County, WYWY23,33340.2+15%

17▼1Fremont County, WYWY39,46439.7+5%

18Laramie County, WYWY102,93838.5+9%

19Natrona County, WYWY80,52638.4+5%

20▲1Sweetwater County, WYWY41,26737.9+11%

21▼1Uinta County, WYWY20,72837.1+18%

22Campbell County, WYWY48,14536.3+13%

23Albany County, WYWY38,55828.6+7%

SHOWING 1–23 OF 23

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES