St. Thomas, Missouri Demographics & Population 2026
During the 2020–2024 ACS period, St. Thomas, Missouri had a total population of 228, the 703rd largest town in Missouri, with a median household income of $89,688, which is 27% higher than the state average. The poverty rate is 3.1%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Key Takeaways
- An exceptionally low poverty rate of 3.1% — among the lowest in Missouri.
- 45.1% of adults hold a bachelor's degree or higher — top 10% in Missouri.
- Housing is very affordable with a home-value-to-income ratio of just 2.4x.
St. Thomas Quick Facts
How St. Thomas 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 | 271 | 228 | -15.9% |
| Median household income | $79,250 | $89,688 | +13.2% |
| Median home value | $193,800 | $212,000 | +9.4% |
How St. Thomas 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+)
St. Thomas Rankings in Missouri
Explore Missouri Rankings
Other Cities in Cole County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| Jefferson City | 42,488 | $66,371 | 12.0% | $218,700 |
| Wardsville | 1,579 | $121,222 | 2.5% | $329,500 |
| Taos | 1,242 | $98,854 | 2.5% | $270,500 |
| St. Martins | 1,228 | $89,250 | 5.0% | $242,400 |
| Russellville | 833 | $56,750 | 5.3% | $166,500 |
| Centertown | 297 | $46,875 | 10.4% | $143,400 |
| Lohman | 243 | $89,167 | 11.9% | $218,800 |
| Eugene | 158 | $58,846 | 17.7% | N/A |
Cities Similar to St. Thomas
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Aurora Springs | 230 | N/A | $146,400 | 26.8% | 40.0% |
| Monticello | 233 | $93,125 | $112,500 | 21.3% | 14.7% |
| Dadeville | 234 | $85,000 | $137,500 | 11.2% | 6.4% |
| Anniston | 241 | N/A | N/A | 2.4% | 17.0% |
| Lohman | 243 | $89,167 | $218,800 | 20.1% | 11.9% |
A note before these figures: with a population of 228, St. Thomas'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
St. Thomas is a small community located in Missouri, within Cole County. The total population is 228. It ranks as the 703rd most populous out of 1,062 Census-designated places in Missouri.
Age Demographics
The median age in St. Thomas is 39.6 years. This is 2% higher than the state median of 39.0 years.
Economy, Income & Housing
The median household income in St. Thomas is $89,688. This is 27% higher than the state median of $70,702. It is also 11% higher than the national median of $80,734. The poverty rate stands at 3.1%. This is 76% lower than the state poverty rate of 12.6%. This exceptionally low poverty rate indicates strong economic prosperity across the community. The survey records no unemployed residents in St. Thomas, which reflects the size of the sample rather than a labor market without joblessness. The median home value is $212,000. Housing costs are 8% lower than the state median of $230,300. With a home-value-to-income ratio of just 2.4x, St. Thomas is one of the most affordable housing markets in the area. 88.8% of occupied housing units are owner-occupied. This homeownership rate is 30% higher than the state average of 68.1%.
Race & Ethnicity
St. Thomas has a predominantly White (non-Hispanic) population, comprising 97.8% of all residents.
Education
45.1% of residents aged 25 and older hold a bachelor's degree or higher. This places St. Thomas in the top 10% of all cities in the state for educational attainment. This is 39% higher 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 97.0%. Notably, 16.5% of adults hold a graduate or professional degree, indicating a highly educated workforce.
Data Sources & Methodology
All demographic data for St. Thomas, 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 St. Thomas, Missouri?
St. Thomas, Missouri has a population of 228 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in St. Thomas, MO?
The median household income in St. Thomas is $89,688, which is 11% higher than the national median of $80,734.
What is the poverty rate in St. Thomas, MO?
The poverty rate in St. Thomas is 3.1%. This means approximately 7 residents live below the federal poverty line.
What is the racial makeup of St. Thomas, Missouri?
St. Thomas's population is 97.8% White, 0.0% Black, 0.0% Hispanic/Latino, and 0.0% Asian.
What is the median home value in St. Thomas, MO?
The median home value in St. Thomas is $212,000. The home-value-to-income ratio is 2.4x.
How educated is St. Thomas, Missouri?
45.1% of adults (25+) in St. Thomas hold a bachelor's degree or higher, and 16.5% hold a graduate or professional degree.