Median age on 1 July (US county estimates)
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.
Counties only: the county file has no state or national medians, and medians cannot be added up. A single-year estimate, unlike median_age, which for US places is a five-year American Community Survey estimate.
Key facts
- Kalawao County had the highest median age on 1 July (US county estimates) of 3144 counties in 2025, at 70.1 years, and Lexington city the lowest, at 22.1 years. Source: the U.S. Census Bureau.
- Published for 3,144 places, with figures from 2010 to 2025.
Rankings
- US counties
- Counties in Texas
- Counties in Georgia
- Counties in Virginia
- Counties in Kentucky
- Counties in Missouri
- Counties in Kansas
- Counties in Illinois
- Counties in North Carolina
- Counties in Iowa
- Counties in Tennessee
- Counties in Nebraska
US counties by median age on 1 July (US county estimates), 2025
Places with data
Provinces and counties
- Los Angeles County
- Cook County
- Harris County
- Maricopa County
- San Diego County
- Orange County
- Miami-Dade County
- Dallas County
- Kings County
- Riverside County
- Arapahoe County
- Douglas County
- Gwinnett County
- Henry County
- Philadelphia County
- Minnehaha County
Use this data in your AI agent
Invokely serves this figure to AI assistants through MCP and to code through a REST API, with the source and citation attached. Ask your assistant:
Which places have the highest median age on 1 July (US county estimates)? Use official data and cite it.
rank_places {"indicator":"median_age_pep","level":"province","within":"United States"}
GET https://invokely.ai/api/v1/rank?indicator=median_age_pep&level=province&within=United%20States