Foster
- County:
- Stephens County
- County Seat:
- No
- Area (mi²):
- 34.461
- State:
- Oklahoma
Foster is a town located in Stephens County, Oklahoma. Foster has a 2026 population of 249. Foster is currently growing at a rate of 0.81% annually and its population has increased by 1.63% since the most recent census, which recorded a population of 245 in 2020.
The median household income in Foster is $74,712 with a poverty rate of 10.63%. The median age in Foster is 36.8 years: 31 years for males, and 41.5 years for females. For every 100 females there are 122.8 males.