Dorchester is located with the area of Grafton County of New Hampshie state. Dorchester has a total area of about 117 sq. kms., located at an elevated height of about 1390 ft. from the ground level. Tourism is among the principal economic activities in the region. There are a number of rivers in the region and they play a major role in attracting tourists. Agriculture, fishing and education are some of the other economic activities of the locals.