
Theresa
- County:
- Jefferson County
- County Seat:
- No
- Area (mi²):
- 65.121
- State:
- New York
Theresa town is located in Jefferson County, New York. Theresa town has a 2025 population of 2,595. Theresa town is currently declining at a rate of -0.69% annually and its population has decreased by -1.7% since the most recent census, which recorded a population of 2,640 in 2020.
The average household income in Theresa town is $89,084 with a poverty rate of 11.36%. The median age in Theresa town is 31.4 years: 29.8 years for males, and 39 years for females.