
Altha
- County:
- Calhoun County
- County Seat:
- No
- Area (mi²):
- 1.337
- State:
- Florida
Altha is a town located in Calhoun County, Florida. Altha has a 2025 population of 498. Altha is currently growing at a rate of 0.4% annually and its population has increased by 1.63% since the most recent census, which recorded a population of 490 in 2020.
The average household income in Altha is $46,987 with a poverty rate of 34.39%. The median age in Altha is 36.1 years: 35.8 years for males, and 37.8 years for females.