Sullivan Real EstateSullivan is located in New Hampshire. Sullivan, New Hampshire has a population of 725. Sullivan is more family-centric than the surrounding county with 39.01% of the households containing married families with children. The county average for households married with children is 25.25%. The median household income in Sullivan, New Hampshire is $60,625. The median household income for the surrounding county is $60,148 compared to the national median of $57,652. The median age of people living in Sullivan is 46.8 years. Sullivan WeatherThe average high temperature in July is 80.1 degrees, with an average low temperature in January of 8.2 degrees. The average rainfall is approximately 46.4 inches per year, with 76.9 inches of snow per year. Sullivan MapReal estate near SullivanNearby CitiesNearby Cities Homes for Sale |