Lyman, New Hampshire is a small town in Grafton County with a population of 533. It is just 20 minutes away from Littleton. The town has a total area of 28.8 square miles, of which 28.5 square miles is land and 0.3 square miles is water. There are many active farms within the town. Most of them are located at Parker Hill road. Students attend Lisbon Regional School in Lyman. Ogontz Lake (74 ac.) is located in the town.