Skip to main content

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

Population 105,950
Median Household Income $73,165
Median Home Value $227,600
Poverty Rate 8.2%
Unemployment Rate 4.3%
Median Age 41.8 years
Homeownership Rate 76.5%
Affordability Ratio 3.1x
Bachelor's Degree+ 23.7%
High School Graduation 90.8%
Cities/Places 15
Population 105,950 12th of 115
Median Income $73,165 3% higher than state
Poverty Rate 8.2%
Unemployment 4.3%

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.

Metric2019–20232020–2024Change
Population105,316105,950+0.6%
Median household income$71,973$73,165+1.7%
Median home value$214,900$227,600+5.9%

Economy & Housing

Household Income Distribution

Under $25K 13.2%
$25K-$50K 19.5%
$50K-$100K 33.2%
$100K+ 34.1%
Detailed income brackets
Under $10K
3.4%
$10K-$15K
2.2%
$15K-$20K
3.2%
$20K-$25K
4.4%
$25K-$30K
3.2%
$30K-$35K
3.9%
$35K-$40K
4.8%
$40K-$45K
4.2%
$45K-$50K
3.5%
$50K-$60K
8.2%
$60K-$75K
10.4%
$75K-$100K
14.6%
$100K-$125K
11.3%
$125K-$150K
7.3%
$150K-$200K
8.2%
$200K+
7.3%

Employment

4.3% Unemployment Rate State: 4.0%|National: 5.2%
62.3% Labor Force Participation

Housing Overview

Owner 76.5%
Renter 23.5%
Affordability Index Affordable
3.1x home value to income ratio
Median gross rent $893/mo 14.6% of median household income annually

People & Demographics

Diversity Index

21out of 100
Very Low Diversity

A less diverse community where one racial or ethnic group represents a large majority.

State average: 40 | National average: 61

Education

Cities & Places in Franklin County

CityPopulationMedian IncomePovertyHome Value
Washington15,130$79,1737.9%$231,800
Union12,781$73,4358.2%$205,200
Sullivan6,310$63,37011.5%$163,200
St. Clair4,789$41,82015.0%$157,700
New Haven3,302$71,30610.1%$192,400
Gray Summit2,991$65,6674.2%$170,500
Villa Ridge2,835$73,82615.9%$166,600
Gerald1,368$61,45814.5%$150,800
Lake St. Clair872$81,3970.0%$227,800
Parkway624$44,47915.5%$192,900
Oak Grove Village347$41,32431.5%$152,500
Stanton175N/A0.0%$173,800
Berger169$55,93819.1%$96,300
Miramiguoa Park155$80,0002.6%$134,200
Leslie91N/A6.6%$107,500

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.