Oldsmar
- County:
- Pinellas County
- County Seat:
- No
- Area (mi²):
- 8.945
- State:
- Florida
Oldsmar is a city located in Pinellas County, Florida. Oldsmar has a 2026 population of 14,831. Oldsmar is currently declining at a rate of -0.55% annually and its population has decreased by -0.6% since the most recent census, which recorded a population of 14,920 in 2020.