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Welcome to Sullivan ...

The village of Sullivan is located in Jefferson County<1>.

While we don't have a date for the founding of Sullivan, you might consider that their post office opened in 1846.

From the  Census Estimates for 2019, Sullivan has a population of 668 people<2> (see below for details).

Sullivan is 860 feet [262 m] above sea level.<3>.

Time Zone: Sullivan lies in the Central Time Zone (CST/CDT) and observes daylight saving time

Area Code for Sullivan: 262

The ZIP code for Sullivan: 53178<4>

Population Details ...

Taken from the 2019 Census Estimates, Sullivan had an population of 668 people. This is a decrease of 0.15% since the 2010 Census (or a decrease of 2.91% since the 2000 Census).

At the time of the 2010 Census, Sullivan had a population of 669 people. This makes Sullivan the county's 24th most populous community.

The population of Sullivan represents 0.01% of the total population of Wisconsin (which has 5,686,986 people), making it the state's 1253rd most populous community.

With a 2010 count of 669 people, the population of Sullivan decreased 2.76% from the 2000 Census (which had a count of 688 people).

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

Communities Also Named Sullivan ...

Using our Gazetteer, we found that there are two Wisconsin communities named Sullivan: This one is located in Jefferson County and the other is located in La Crosse County.

Beyond Wisconsin, 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 Hampshire, New York, Ohio, Ontario, Pennsylvania (2), Quebec, South Dakota, Texas, Virginia (2) and West Virginia (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.

  • Waukesha
    (18 miles [29 km] to the east)
    • Waukesha is located in Waukesha County
    • Jump to our Gazetteer entry for Waukesha
    • Population from the 2020 Census: 72,376 people
  • Watertown
    (14 miles [22.5 km] to the northwest)
    • Watertown is located in Jefferson County
    • Jump to our Gazetteer entry for Watertown
    • Population from the 2020 Census: 23,370 people
  • Oconomowoc
    (7 miles [11.3 km] to the northeast)
    • Oconomowoc is located in Waukesha County
    • Jump to our Gazetteer entry for Oconomowoc
    • Population from the 2020 Census: 17,160 people
  • Whitewater
    (14 miles [22.5 km] to the southwest)
    • Whitewater is located in Walworth County
    • Jump to our Gazetteer entry for Whitewater
    • Population from the 2020 Census: 14,993 people
  • Pewaukee
    (17 miles [27.4 km] to the east)
    • Pewaukee is located in Waukesha County
    • Jump to our Gazetteer entry for Pewaukee
    • Population from the 2020 Census: 14,703 people
  • Fort Atkinson
    (13 miles [20.9 km] to the southwest)
    • Fort Atkinson is located in Jefferson County
    • Jump to our Gazetteer entry for Fort Atkinson
    • Population from the 2020 Census: 12,372 people
  • Hartland
    (13 miles [20.9 km] to the northeast)
    • Hartland is located in Waukesha County
    • Jump to our Gazetteer entry for Hartland
    • Population from the 2020 Census: 9,338 people
  • Mukwonago
    (16 miles [25.7 km] to the southeast)
    • Mukwonago is located in Waukesha County
    • Jump to our Gazetteer entry for Mukwonago
    • Population from the 2020 Census: 8,107 people
  • Pewaukee
    (17 miles [27.4 km] to the east)
    • Pewaukee is located in Waukesha County
    • Jump to our Gazetteer entry for Pewaukee
    • Population from the 2020 Census: 8,099 people
  • Jefferson
    (11 miles [17.7 km] to the west)
    • Jefferson is located in Jefferson County
    • Jump to our Gazetteer entry for Jefferson
    • Population from the 2020 Census: 8,037 people

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.

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 book titled U.S. Post Offices (Oct. 1846).

For more details, see References and Mentions for Sullivan.

Footnotes ...

<1>If you're interested in how the shape of Wisconsin's counties, including Jefferson, 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 village (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).