Sullivan, Wisconsin Demographics & Population 2026
During the 2020–2024 ACS period, Sullivan, Wisconsin had a total population of 663, the 474th largest village in Wisconsin, with a median household income of $71,250, which is 8% lower than the state average. The poverty rate is 27.2%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Key Takeaways
- More than 1 in 4 residents live below the poverty line (27.2%), well above the national average of 12.4%.
- Near full employment with an unemployment rate of just 1.2%.
Sullivan Quick Facts
How Sullivan Changed
Change from the 2019–2023 ACS period to 2020–2024. These are rolling five-year estimates, not year-over-year measurements.
| Metric | 2019–2023 | 2020–2024 | Change |
|---|---|---|---|
| Population | 711 | 663 | -6.8% |
| Median household income | $82,500 | $71,250 | -13.6% |
| Median home value | $244,500 | $257,400 | +5.3% |
How Sullivan Compares
Median Household Income
Median Home Value
Economy & Housing
Household Income Distribution
Detailed income brackets
Employment
Housing Overview
People & Demographics
Age Distribution
Race & Ethnicity
Diversity Index
A less diverse community where one racial or ethnic group represents a large majority.
State average: 37 | National average: 61
Education
Educational Attainment (Adults 25+)
Sullivan Rankings in Wisconsin
Explore Wisconsin Rankings
Other Cities in Jefferson County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| Fort Atkinson | 12,463 | $79,302 | 6.7% | $211,800 |
| Jefferson | 7,732 | $79,006 | 11.2% | $225,600 |
| Lake Mills | 6,470 | $91,027 | 5.1% | $317,100 |
| Waterloo | 3,600 | $87,776 | 13.7% | $230,600 |
| Johnson Creek | 3,362 | $100,685 | 4.3% | $314,200 |
| Ixonia | 2,684 | $93,359 | 1.0% | $345,300 |
| Palmyra | 2,195 | $86,058 | 11.4% | $213,100 |
| Lake Ripley | 1,932 | $116,179 | 10.1% | $366,300 |
| Lake Koshkonong | 1,010 | $97,115 | 5.8% | $370,300 |
| Rome | 620 | $92,083 | 4.7% | $326,200 |
Cities Similar to Sullivan
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Chief Lake | 660 | $70,833 | $215,000 | 25.6% | 23.3% |
| Superior | 653 | $70,694 | $274,200 | 27.8% | 8.4% |
| Wonewoc | 670 | $72,708 | $119,000 | 19.8% | 14.8% |
| Fremont | 650 | $68,750 | $235,300 | 24.6% | 13.1% |
| Norwalk | 662 | $66,146 | $96,700 | 9.5% | 8.6% |
A note before these figures: with a population of 663, Sullivan's ACS estimates come from a small number of survey responses and carry wide margins of error. Individual percentages below — particularly rates that round to 0% or 100% — are approximations, not precise measurements. See data.census.gov for the published margins of error.
Population Overview
Sullivan is a small community located in Wisconsin, within Jefferson County. The total population is 663. It ranks as the 474th most populous out of 808 Census-designated places in Wisconsin.
Age Demographics
The median age in Sullivan is 42.6 years. This is 6% higher than the state median of 40.2 years.
Economy, Income & Housing
The median household income in Sullivan is $71,250. This is 8% lower than the state median of $77,485. It is also 12% lower than the national median of $80,734. The poverty rate stands at 27.2%. This is 157% higher than the state poverty rate of 10.5%. With more than one in five residents living below the poverty line, economic hardship is a significant challenge for the community. The unemployment rate is 1.2%. This is 62% lower than the state rate of 3.3%. The median home value is $257,400. Housing costs are 3% lower than the state median of $266,500. The home-value-to-income ratio is 3.6x. 44.2% of occupied housing units are owner-occupied. This homeownership rate is 35% lower than the state average of 67.8%.
Race & Ethnicity
Sullivan has a predominantly White (non-Hispanic) population, comprising 95.5% of all residents. Hispanic or Latino residents account for 0.9%. The Hispanic or Latino population (0.9%) is well below the state average of 8.0%. The Asian population (0.1%) is well below the state average of 2.9%.
Education
16.5% of residents aged 25 and older hold a bachelor's degree or higher. This is 51% lower than the state rate of 33.4%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 90.7%.
Data Sources & Methodology
All demographic data for Sullivan, Wisconsin is sourced from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates. The ACS collects data from approximately 3.5 million households annually and pools five years of responses so that even small communities can be measured, though the margin of error widens as the population falls. Comparisons are made against Wisconsin state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 808 Census-designated places in Wisconsin. Read more about how these figures are produced on our methodology page, or visit data.census.gov for official data.
Free data download: Get all Wisconsin city and county demographics as CSV. Download Cities CSV | Download Counties CSV
Frequently Asked Questions
What is the population of Sullivan, Wisconsin?
Sullivan, Wisconsin has a population of 663 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Sullivan, WI?
The median household income in Sullivan is $71,250, which is 12% lower than the national median of $80,734.
What is the poverty rate in Sullivan, WI?
The poverty rate in Sullivan is 27.2%. This means approximately 179 residents live below the federal poverty line.
What is the racial makeup of Sullivan, Wisconsin?
Sullivan's population is 95.5% White, 0.0% Black, 0.9% Hispanic/Latino, and 0.1% Asian.
What is the median home value in Sullivan, WI?
The median home value in Sullivan is $257,400. The home-value-to-income ratio is 3.6x.
How educated is Sullivan, Wisconsin?
16.5% of adults (25+) in Sullivan hold a bachelor's degree or higher, and 3.7% hold a graduate or professional degree.