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Welcome to Sullivan County ...

Time Zone: Sullivan County lies in the Eastern Time Zone (EST/EDT) and observes daylight saving time.

The community of Newport is the Seat for Sullivan County.

Sullivan County was founded in 1827 and was created by taking area from Cheshire County.

From the Census Estimates for 2019, <1> Sullivan had a population of 43,146 people. This is a decrease of 1.37% since the last Census (which gave a population of 43,745 people in 2010).

At the time of the 2010 Census, Sullivan represented 3.32% of the total population of New Hampshire.

Below are some of the communities located in Sullivan County:

  • Acworth
    (9 miles [14.5 km] to the south)
    • Acworth is located in Sullivan County (NH)
    • Jump to our Gazetteer entry for Acworth
    • Population from the 2020 Census: 897 people
  • Charlestown
    (11 miles [17.7 km] to the southwest)
  • Claremont
    (4 miles [6.4 km] to the northwest)
    • Claremont is located in Sullivan County (NH)
    • Jump to our Gazetteer entry for Claremont
    • Population from the 2020 Census: 12,944 people
    • Jump to TripAdvisor's Tourism page for Claremont <2>
  • Cornish
    (10 miles [16.1 km] to the northwest)
    • Cornish is located in Sullivan County (NH)
    • Jump to our Gazetteer entry for Cornish
    • Population from the 2020 Census: 1,616 people
    • Jump to TripAdvisor's Tourism page for Cornish <2>
  • Croydon
    (8 miles [12.9 km] to the northeast)
    • Croydon is located in Sullivan County (NH)
    • Jump to our Gazetteer entry for Croydon
    • Population from the 2020 Census: 774 people
  • Goshen
    (5 miles [8 km] to the southeast)
    • Goshen is located in Sullivan County (NH)
    • Jump to our Gazetteer entry for Goshen
    • Population from the 2020 Census: 813 people
    • Jump to TripAdvisor's Tourism page for Goshen <2>
  • Grantham
    (11 miles [17.7 km] to the northeast)
    • Grantham is located in Sullivan County (NH)
    • Jump to our Gazetteer entry for Grantham
    • Population from the 2020 Census: 2,955 people
    • Jump to TripAdvisor's Tourism page for Grantham <2>
  • Langdon
    (13 miles [20.9 km] to the southwest)
    • Langdon is located in Sullivan County (NH)
    • Jump to our Gazetteer entry for Langdon
    • Population from the 2020 Census: 688 people
  • Continue List   (7 more) ...
    • Lempster
      (8 miles [12.9 km] to the southeast)
      • Lempster is located in Sullivan County (NH)
      • Jump to our Gazetteer entry for Lempster
      • Population from the 2020 Census: 1,177 people
    • Newport
      (4 miles [6.4 km] to the east)
      • Newport is located in Sullivan County (NH)
      • Jump to our Gazetteer entry for Newport
      • Population from the 2020 Census: 6,379 people
      • Jump to TripAdvisor's Tourism page for Newport <2>
    • Plainfield
      (14 miles [22.5 km] to the northwest)
    • Springfield
      (14 miles [22.5 km] to the northeast)
      • Springfield is located in Sullivan County (NH)
      • Jump to our Gazetteer entry for Springfield
      • Population from the 2020 Census: 1,348 people
    • Sunapee
      (8 miles [12.9 km] to the east)
      • Sunapee is located in Sullivan County (NH)
      • Jump to our Gazetteer entry for Sunapee
      • Population from the 2020 Census: 3,505 people
      • Jump to TripAdvisor's Tourism page for Sunapee <2>
    • Unity
      (3 miles [4.8 km] to the south)
      • Unity is located in Sullivan County (NH)
      • Jump to our Gazetteer entry for Unity
      • Population from the 2020 Census: 1,616 people
    • Washington
      (13 miles [20.9 km] to the southeast)

Websites of Interest ...

Footnotes ...

<1>On a yearly basis, the US Census Bureau creates an estimate of the county's population. Keep in mind that this is an estimate and not an actual count. The last physical count was the 2010 Census and the next count will be for the 2020 Census.
<2>While we're fans and frequent users of TripAdvisor, you should know that we're also members of the TripAdvisor affiliate program.