Lake Mary
- County:
- Seminole County
- County Seat:
- No
- Area (mi²):
- 9.076
- State:
- Florida
Lake Mary is a city located in Seminole County, Florida. Lake Mary has a 2026 population of 16,989. Lake Mary is currently growing at a rate of 0.56% annually and its population has increased by 0.91% since the most recent census, which recorded a population of 16,836 in 2020.