Sullivan County Map
The County of Sullivan is located in the State of New Hampshire. Find directions to Sullivan County, browse local businesses, landmarks, get current traffic estimates, road conditions, and more. According to the 2020 US Census the Sullivan County population is estimated at 43,267 people. The Sullivan County time zone is Eastern Daylight Time which is 5 hours behind Coordinated Universal Time (UTC).
Nearby counties include Cheshire County, Grafton County, Hillsborough County, Merrimack County, Windham County, Windsor County.
Top cities include Claremont, Newport, Charlestown, Sunapee, Grantham