Sanbornville is a census-designated place (CDP) in the town of Wakefield in Carroll County, New Hampshire, United States. It had a population of 1,056 at the 2010 census.
Sanbornville is in the southwestern part of the town of Wakefield, south of Wakefield village and north of Union. New Hampshire Route 16 forms the western edge of the CDP; the highway runs north 10 miles (16 km) to Ossipee and south 20 miles (32 km) to Rochester. New Hampshire Route 153 runs through the center of Sanbornville, leading north 17 miles (27 km) to Effingham and south 12 miles (19 km) to Farmington. New Hampshire Route 109 also passes through the center of Sanbornville, leading west 13 miles (21 km) to Wolfeboro and southeast 18 miles (29 km) to Sanford, Maine.
According to the U.S. Census Bureau, the Sanbornville CDP has a total area of 1.6 square miles (4.1 km2), of which 0.896 acres (3,626 m2), or 0.09%, are water. The village is at the outlet of Lovell Lake, which forms the eastern edge of the CDP. The Branch River flows westward from the lake through the village before turning south on its course towards the Salmon Falls River.
As of the census of 2010, there were 1,056 people, 417 households, and 280 families residing in the CDP. There were 482 housing units, of which 65, or 13.5%, were vacant. 35 of the vacant units were for seasonal or recreational use. The racial makeup of the CDP was 97.9% white, 0.6% African American, 0.6% Asian, and 0.9% two or more races.