
Hillsdale
- County:
- Garfield County
- County Seat:
- No
- Area (mi²):
- 0.347
- State:
- Oklahoma
Hillsdale is a town located in Garfield County, Oklahoma. Hillsdale has a 2025 population of 70. Hillsdale is currently declining at a rate of 0% annually and its population has decreased by -2.78% since the most recent census, which recorded a population of 72 in 2020.
The average household income in Hillsdale is $44,951 with a poverty rate of 7.79%. The median age in Hillsdale is 48.4 years: 47.9 years for males, and 57.5 years for females.