St. Peters, Missouri Demographics & Population 2026
During the 2020–2024 ACS period, St. Peters, Missouri had a total population of 59,092, the 11th largest city in Missouri, with a median household income of $91,637, which is 30% higher than the state average. The poverty rate is 5.7%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Key Takeaways
- 39.2% of adults hold a bachelor's degree or higher — top 10% in Missouri.
- Near full employment with an unemployment rate of just 2.3%.
St. Peters Quick Facts
How St. Peters 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 | 58,200 | 59,092 | +1.5% |
| Median household income | $89,827 | $91,637 | +2.0% |
| Median home value | $252,800 | $269,900 | +6.8% |
How St. Peters 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. Peters Rankings in Missouri
Explore Missouri Rankings
Other Cities in St. Charles County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| O'Fallon | 93,801 | $110,443 | 5.4% | $326,200 |
| St. Charles | 71,508 | $85,937 | 7.3% | $298,700 |
| Wentzville | 47,061 | $112,394 | 5.4% | $331,300 |
| Lake St. Louis | 18,066 | $125,693 | 4.3% | $405,900 |
| Dardenne Prairie | 13,503 | $152,500 | 1.3% | $432,000 |
| Cottleville | 5,937 | $131,310 | 2.0% | $435,400 |
| Weldon Spring | 5,310 | $158,548 | 0.7% | $544,300 |
| St. Paul | 3,456 | $159,022 | 0.5% | $443,600 |
| Foristell | 1,096 | $116,581 | 1.7% | $431,700 |
| Josephville | 664 | $107,708 | 18.1% | $494,600 |
Cities Similar to St. Peters
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Blue Springs | 59,965 | $88,920 | $263,100 | 35.0% | 7.0% |
| St. Charles | 71,508 | $85,937 | $298,700 | 43.3% | 7.3% |
| Florissant | 51,773 | $65,318 | $148,800 | 22.4% | 10.1% |
| Wentzville | 47,061 | $112,394 | $331,300 | 39.6% | 5.4% |
| Chesterfield | 49,574 | $133,037 | $472,500 | 72.5% | 3.9% |
Population Overview
St. Peters is a mid-sized community located in Missouri, within St. Charles County. The total population is 59,092. It ranks as the 11th most populous out of 1,062 Census-designated places in Missouri.
Age Demographics
The median age in St. Peters is 41.0 years. This is 5% higher than the state median of 39.0 years.
Economy, Income & Housing
The median household income in St. Peters is $91,637. This is 30% higher than the state median of $70,702. It is also 14% higher than the national median of $80,734. The poverty rate stands at 5.7%. This is 55% lower than the state poverty rate of 12.6%. The unemployment rate is 2.3%. This is 43% lower than the state rate of 4.0%. The median home value is $269,900. Housing costs are 17% higher than the state median of $230,300. With a home-value-to-income ratio of just 2.9x, St. Peters is one of the most affordable housing markets in the area. 79.0% of occupied housing units are owner-occupied. This homeownership rate is 16% higher than the state average of 68.1%.
Race & Ethnicity
St. Peters has a predominantly White (non-Hispanic) population, comprising 85.0% of all residents. Black or African American residents account for 4.6%. The Black or African American population (4.6%) is well below the state average of 10.9%.
Education
39.2% of residents aged 25 and older hold a bachelor's degree or higher. This places St. Peters in the top 10% of all cities in the state for educational attainment. This is 21% 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 95.9%.
Data Sources & Methodology
All demographic data for St. Peters, 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. Peters, Missouri?
St. Peters, Missouri has a population of 59,092 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in St. Peters, MO?
The median household income in St. Peters is $91,637, which is 14% higher than the national median of $80,734.
What is the poverty rate in St. Peters, MO?
The poverty rate in St. Peters is 5.7%. This means approximately 3,311 residents live below the federal poverty line.
What is the racial makeup of St. Peters, Missouri?
St. Peters's population is 85.0% White, 4.6% Black, 2.9% Hispanic/Latino, and 2.6% Asian.
What is the median home value in St. Peters, MO?
The median home value in St. Peters is $269,900. The home-value-to-income ratio is 2.9x.
How educated is St. Peters, Missouri?
39.2% of adults (25+) in St. Peters hold a bachelor's degree or higher, and 14.2% hold a graduate or professional degree.