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Welcome to Sullivan ...

Sullivan is located in Cheshire County<1>.

While we don't have a date for the founding of Sullivan, you might consider that their post office opened in 1828.

From the  Census Estimates for 2019, Sullivan has a population of 675 people<2> (see below for details).

Sullivan is 1,410 feet [430 m] above sea level.<3>.

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

Area Code for Sullivan: 603

The ZIP code for Sullivan: 03445<4>

Population Details ...

Taken from the 2019 Census Estimates, Sullivan had an population of 675 people. This is a decrease of 0.3% since the 2010 Census (or a decrease of 9.52% since the 2000 Census).

At the time of the 2010 Census, Sullivan had a population of 677 people. This makes Sullivan the county's 22nd most populous community.

The population of Sullivan represents 0.05% of the population of New Hampshire (which has 1,316,470 people), making it the state's 211st most populous community.

With a 2010 count of 677 people, the population of Sullivan decreased 9.25% from the 2000 Census (with a count of 746 people).

More information can be found on the Census Page for Sullivan.

Communities Also Named Sullivan ...

Using our Gazetteer, we found that there are 32 communities that are also named Sullivan - they are located in Alabama, Arizona, Arkansas, British Columbia, California (2), Colorado, Illinois, Indiana, Kansas (3), Kentucky, Maine, Michigan, Missouri, Montana, Nebraska, New York, Ohio, Ontario, Pennsylvania (2), Quebec, South Dakota, Texas, Virginia (2), West Virginia (2) and Wisconsin (2).

For more information, see our Tidbits & Trivia Page for Sullivan.

Communities near Sullivan ...

We have created a list of 10 communities that are near Sullivan.

To Help With Your Genealogy Research ...

We have a couple of sections for those tracing their genealogy.

We created a list of cemeteries that are in the area around Sullivan. Our list includes the location of those cemeteries and we provide an overhead view. See our Cemetery List for Sullivan.

Using the information from an 1895 Atlas, we've created a list of communities that were in the area of Sullivan. Our list includes information such as whether the 1895 community had a post office or railroad service. See our List of 1890's Communities around Sullivan.

We also have a detailed list of newspapers that have been published in the area around Sullivan. See our Newspapers Page for Sullivan.

TripAdvisor Tourism Pages for Sullivan ...

Looking for more information about Sullivan? A wonderful source is the TripAdvisor website. We always start with the TripAdvisor Tourism page, where you can read an overview with links that will help you find lodging, restaurants and attractions.

In addition to the Tourism page for Sullivan, there are neighboring communities that also have Tourism pages. More information about those communities can be found on our TripAdvisor Page for Sullivan.

Adding Sullivan to Our Gazetteer ...

We originally found mention of Sullivan in both the FIPS-55 and the GNIS. For more information, see the FIPS and GNIS Codes sections on our Miscellaneous Page.

From our notes, the earliest published mention we've found (so far) for Sullivan was in the document titled List of Post Offices from Cameron Blevins and Richard Helbock.<6>

From that list, the Sullivan post office opened in 1828. The Sullivan post office closed in 1959.

For more details, see References and Mentions for Sullivan.

Footnotes ...

<1>If you're interested in how the shape of New Hampshire's counties, including Cheshire, have changed over time, we recommend the Atlas of Historical County Boundaries.
<2>Population counts have been provided by the U.S. Census Bureau. For more detail, please visit our Census Page for Sullivan.
<3>The elevation is an estimate for the area around Sullivan - it will be higher in some places and lower in others.
<4>ZIP Codes have been created by the United States Postal Service (USPS) as a way of grouping addresses to make delivery more efficient. The boundaries of the ZIP Code can be changed, re-assigned, eliminated or overlapped with other ZIP Codes. So keep in mind that any given ZIP Code is only 'loosely' associated with a community (such as Sullivan). When looking for a ZIP Code, whether Sullivan or elsewhere, it's always best to check the website of the United States Postal Service (USPS).
<5>While we're fans and frequent users of TripAdvisor, you should know that we're also members of the TripAdvisor affiliate program.
<6>A copy of the Blevins & Helbock Post Office list with background information can be found at:

      https://cblevins.github.io/us-post-offices/data-biography/