Calvin
- County:
- Hughes County
- County Seat:
- No
- Area (mi²):
- 0.901
- State:
- Oklahoma
Calvin is a town located in Hughes County, Oklahoma. Calvin has a 2026 population of 309. Calvin is currently declining at a rate of -0.64% annually and its population has decreased by -0.32% since the most recent census, which recorded a population of 310 in 2020.