Bath is a town located in Grafton County, New Hampshire. As of the 2000 census, the town had a total population of 893.
According to the United States Census Bureau, the town has a total area of 100.1 km2 (38.6 mi2). 98.9 km2 (38.2 mi2) of it is land and 1.2 km2 (0.5 mi2) of it is water. The total area is 1.19% water.