Oak Grove
- County:
- Jackson County
- County Seat:
- No
- Area (mi²):
- 6.411
- State:
- Missouri
Oak Grove is a city located in Jackson County, Missouri. Oak Grove has a 2026 population of 9,129. Oak Grove is currently growing at a rate of 2.42% annually and its population has increased by 11.37% since the most recent census, which recorded a population of 8,197 in 2020.