Franklin County, Missouri Demographics 2026
Franklin County, Missouri has a population of 105,950, the 12th most populous county in Missouri. The median household income is $73,165 and the median home value is $227,600. The poverty rate is 8.2%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Franklin County Quick Facts
How Franklin County 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 | 105,316 | 105,950 | +0.6% |
| Median household income | $71,973 | $73,165 | +1.7% |
| Median home value | $214,900 | $227,600 | +5.9% |
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+)
Cities & Places 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 |
| Sullivan | 6,310 | $63,370 | 11.5% | $163,200 |
| 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 |
| Stanton | 175 | N/A | 0.0% | $173,800 |
| Berger | 169 | $55,938 | 19.1% | $96,300 |
| Miramiguoa Park | 155 | $80,000 | 2.6% | $134,200 |
| Leslie | 91 | N/A | 6.6% | $107,500 |
Explore Missouri Rankings
Population Overview
Franklin County is located in Missouri with a total population of 105,950. It is the 12th most populous county out of 115 in Missouri. The county encompasses 15 Census-designated places.
Age Demographics
The median age in Franklin County is 41.8 years. This is 7% higher than the state median of 39.0 years.
Economy, Income & Housing
The median household income in Franklin County is $73,165. This is 3% higher than the state median of $70,702. It is also 9% lower than the national median of $80,734. The poverty rate stands at 8.2%. This is 35% lower than the state poverty rate of 12.6%. The unemployment rate is 4.3%. This is 7% higher than the state rate of 4.0%. The median home value is $227,600. Housing costs are 1% lower than the state median of $230,300. The home-value-to-income ratio is 3.1x. 76.5% of occupied housing units are owner-occupied. This homeownership rate is 12% higher than the state average of 68.1%.
Race & Ethnicity
Franklin County has a predominantly White (non-Hispanic) population, comprising 88.7% of all residents. Hispanic or Latino residents account for 2.3%. The Black or African American population (0.9%) is well below the state average of 10.9%. The Hispanic or Latino population (2.3%) is well below the state average of 5.2%. The Asian population (0.4%) is well below the state average of 2.1%.
Education
23.7% of residents aged 25 and older hold a bachelor's degree or higher. This is 27% 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 90.8%.
Data Sources & Methodology
All figures for Franklin County come from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates, with comparisons drawn against Missouri and national averages from the same dataset. See our methodology page for how each metric is defined, or data.census.gov for official tables with margins of error.
Frequently Asked Questions
What is the population of Franklin County, Missouri?
Franklin County has a population of 105,950, making it the 12th most populous county in Missouri.
What is the median income in Franklin County?
The median household income in Franklin County is $73,165 with a poverty rate of 8.2%.
How many cities are in Franklin County, Missouri?
Franklin County contains 15 Census-designated places.