Hartland was incorporated as a town in 1761. It is located in Hartford County. From the year of incorporation to the 1900s, the town underwent a transformative change. A Metropolitan District Commission built the Saville Dam and later created a Barkhamsted Reservoir. Asher Benjamin, an architect born in Hartland, was the first American to author architectural pattern books. He strongly influenced building design throughout New England. The town's total area is 89,6 square kilometers, and the population is about 1900 people, according to the 2020 census.