Sullivan, Missouri Demographics & Population 2026
During the 2020–2024 ACS period, Sullivan, Missouri had a total population of 6,310, the 123rd largest city in Missouri, with a median household income of $63,370, which is 10% lower than the state average. The poverty rate is 11.5%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
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 | 6,355 | 6,310 | -0.7% |
| Median household income | $60,137 | $63,370 | +5.4% |
| Median home value | $153,100 | $163,200 | +6.6% |
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: 40 | National average: 61
Education
Educational Attainment (Adults 25+)
Sullivan Rankings in Missouri
Explore Missouri Rankings
Other Cities in Franklin County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| Washington | 15,130 | $79,173 | 7.9% | $231,800 |
| Union | 12,781 | $73,435 | 8.2% | $205,200 |
| St. Clair | 4,789 | $41,820 | 15.0% | $157,700 |
| New Haven | 3,302 | $71,306 | 10.1% | $192,400 |
| Gray Summit | 2,991 | $65,667 | 4.2% | $170,500 |
| Villa Ridge | 2,835 | $73,826 | 15.9% | $166,600 |
| Gerald | 1,368 | $61,458 | 14.5% | $150,800 |
| Lake St. Clair | 872 | $81,397 | 0.0% | $227,800 |
| Parkway | 624 | $44,479 | 15.5% | $192,900 |
| Oak Grove Village | 347 | $41,324 | 31.5% | $152,500 |
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 |
|---|---|---|---|---|---|
| Richmond | 5,959 | $59,556 | $142,600 | 13.2% | 16.3% |
| Pevely | 6,055 | $56,000 | $219,600 | 18.4% | 17.9% |
| Valley Park | 6,795 | $67,898 | $251,000 | 43.9% | 9.8% |
| St. John | 6,527 | $53,755 | $106,300 | 19.9% | 15.4% |
| De Soto | 6,470 | $52,500 | $160,700 | 11.5% | 13.1% |
Population Overview
Sullivan is a small city located in Missouri, within Franklin County. The total population is 6,310. It ranks as the 123rd most populous out of 1,062 Census-designated places in Missouri.
Age Demographics
The median age in Sullivan is 39.4 years. This is 1% higher than the state median of 39.0 years.
Economy, Income & Housing
The median household income in Sullivan is $63,370. This is 10% lower than the state median of $70,702. It is also 22% lower than the national median of $80,734. The poverty rate stands at 11.5%. This is 9% lower than the state poverty rate of 12.6%. The unemployment rate is 5.9%. This is 47% higher than the state rate of 4.0%. The median home value is $163,200. Housing costs are 29% lower than the state median of $230,300. With a home-value-to-income ratio of just 2.6x, Sullivan is one of the most affordable housing markets in the area. 62.4% of occupied housing units are owner-occupied. This homeownership rate is 8% lower than the state average of 68.1%.
Race & Ethnicity
Sullivan has a predominantly White (non-Hispanic) population, comprising 87.7% of all residents. Black or African American residents account for 1.5%. The Black or African American population (1.5%) is well below the state average of 10.9%. The Hispanic or Latino population (0.8%) is well below the state average of 5.2%.
Education
18.9% of residents aged 25 and older hold a bachelor's degree or higher. This is 42% lower than the state rate of 32.4%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 91.5%.
Data Sources & Methodology
All demographic data for Sullivan, Missouri 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 Missouri state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 1,062 Census-designated places in Missouri. Read more about how these figures are produced on our methodology page, or visit data.census.gov for official data.
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Frequently Asked Questions
What is the population of Sullivan, Missouri?
Sullivan, Missouri has a population of 6,310 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Sullivan, MO?
The median household income in Sullivan is $63,370, which is 22% lower than the national median of $80,734.
What is the poverty rate in Sullivan, MO?
The poverty rate in Sullivan is 11.5%. This means approximately 705 residents live below the federal poverty line.
What is the racial makeup of Sullivan, Missouri?
Sullivan's population is 87.7% White, 1.5% Black, 0.8% Hispanic/Latino, and 0.0% Asian.
What is the median home value in Sullivan, MO?
The median home value in Sullivan is $163,200. The home-value-to-income ratio is 2.6x.
How educated is Sullivan, Missouri?
18.9% of adults (25+) in Sullivan hold a bachelor's degree or higher, and 8.2% hold a graduate or professional degree.