Welcome to Theresa, a charming town nestled in upstate New York, founded in 1852. Despite its small population of around 2,905 residents, Theresa boasts a rich history dating back to the mid-19th century. This quaint town is known for its picturesque landscapes, friendly community, and vibrant local culture. Sister cities of Theresa include places like Brockville in Canada, creating a unique international connection for such a small American town.