# Counties in Wyoming by median age on 1 July (US county estimates), 2025

All 23 values come from U.S. Census Bureau for 2025, so the places are comparable.

- Indicator id: `median_age_pep`
- Unit: years
- Definition: Age that divides the resident population of a US county into two halves of equal size on 1 July, from Census Bureau population estimates calculated by single year of age.
- Source: U.S. Census Bureau, Population Estimates Program, county population by age and sex: median age (MEDIAN_AGE_TOT) on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage (https://www.census.gov/programs-surveys/popest/data/data-sets.html)
- Publisher page: https://invokely.ai/en/publishers/us-census-bureau
- Retrieved: 2026-10-12
- Citation: U.S. Census Bureau. Population Estimates Program, county population by age and sex: median age (MEDIAN_AGE_TOT) on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage. https://www.census.gov/programs-surveys/popest/data/data-sets.html. Retrieved 2026-10-12.
- Web page: https://invokely.ai/rankings/median-age-july-1-us-counties/wyoming-counties

| Rank | Place | years |
|---:|---|---:|
| 1 | Hot Springs County | 49.4 |
| 2 | Platte County | 49.2 |
| 3 | Johnson County | 49 |
| 4 | Niobrara County | 48.9 |
| 5 | Weston County | 47.1 |
| 6 | Washakie County | 46.1 |
| 7 | Park County | 45.9 |
| 8 | Crook County | 44.8 |
| 9 | Goshen County | 44.3 |
| 10 | Sheridan County | 44.2 |
| 11 | Sublette County | 43.5 |
| 12 | Big Horn County | 42.8 |
| 13 | Lincoln County | 42.5 |
| 14 | Carbon County | 42.3 |
| 15 | Teton County | 41.9 |
| 16 | Converse County | 41.6 |
| 17 | Fremont County | 41 |
| 18 | Natrona County | 39.3 |
| 18 | Uinta County | 39.3 |
| 20 | Laramie County | 39.2 |
| 21 | Sweetwater County | 38.4 |
| 22 | Campbell County | 36.7 |
| 23 | Albany County | 28.7 |