Winthrop Town
- County:
- Suffolk County
- County Seat:
- No
- Area (mi²):
- 1.991
- State:
- Massachusetts
Winthrop Town is a city located in Suffolk County, Massachusetts. Winthrop Town has a 2026 population of 18,739. Winthrop Town is currently growing at a rate of 0.84% annually but its population has decreased by -2.69% since the most recent census, which recorded a population of 19,257 in 2020.