Mill Creek
- County:
- Johnston County
- County Seat:
- No
- Area (mi²):
- 0.384
- State:
- Oklahoma
Mill Creek is a town located in Johnston County, Oklahoma. Mill Creek has a 2026 population of 291. Mill Creek is currently growing at a rate of 0.69% annually and its population has increased by 0.34% since the most recent census, which recorded a population of 290 in 2020.