
Foster
- County:
- Fountain County
- County Seat:
- No
- Area (mi²):
- 1.286
- State:
- Indiana
Foster is a CDP located in Fountain County, Indiana. Foster has a 2025 population of 176. Foster is currently growing at a rate of 7.32% annually and its population has increased by 74.26% since the most recent census, which recorded a population of 101 in 2020.
The average household income in Foster is $77,364 with a poverty rate of 0%. The median age in Foster is 62 years: 56.9 years for males, and 62.1 years for females.