Altheimer
- County:
- Jefferson County
- County Seat:
- No
- Area (mi²):
- 2.05
- State:
- Arkansas
Altheimer is a city located in Jefferson County, Arkansas. Altheimer has a 2026 population of 651. Altheimer is currently declining at a rate of -0.91% annually and its population has decreased by -6.6% since the most recent census, which recorded a population of 697 in 2020.
The median household income in Altheimer is $42,663 with a poverty rate of 18.18%. The median age in Altheimer is 57.2 years: 53.2 years for males, and 60.5 years for females. For every 100 females there are 170.7 males.