Spencer
- County:
- Oklahoma County
- County Seat:
- No
- Area (mi²):
- 5.381
- State:
- Oklahoma
Spencer is a city located in Oklahoma County, Oklahoma. Spencer has a 2026 population of 3,883. Spencer is currently declining at a rate of -0.49% annually and its population has decreased by -2.49% since the most recent census, which recorded a population of 3,982 in 2020.