St. Charles, Missouri Demographics
Population trends, housing costs, income, commuting, and health, all on one page.
St. Charles, MO Population Density Map and Area Scores
Area Score
Health, income and education, each graded from F to A+. Explore interactive maps for deeper analysis.
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B
Health Around average
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B
Income Around average
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B
Education Around average
Source: Map AI Methodology
Population
| Metric | St. Charles | Missouri Avg | U.S. Average |
|---|---|---|---|
| Population | 68,558 | 6,186,340 | 337,468,954 |
| Population density (per sq mi) | 2666.6 | 88.8 | 86.4 |
| Population growth (%/yr) | 0.18% | 0.28% | 0.59% |
| Median age | 36.7 | 37.5 | 37.3 |
| Households | 29,389 | 2,507,647 | 130,235,071 |
Population in St. Charles grew by 12.3% from 2009 to 2024, reaching 68,558 in 2024.
Population Growth 2009–2024
Race & Ethnicity
Age & Sex
The largest generation in St. Charles is Gen Z, aged 13–28, at 24.6% of residents. That is 3.4 points above Missouri as a whole.
- Gen Z 13–28 16,880 24.6% +3.4 pts
- Millennials 29–44 14,865 21.7% +0.4 pts
- Gen X 45–60 13,099 19.1% -0.5 pts
- Boomers 61–79 11,944 17.4% -0.5 pts
Residents by birth cohort, from the 2025 age distribution. The right-hand figure is how far each cohort's share sits above or below Missouri, in percentage points. Children younger than Gen Z and the generations before the Boomers are counted in the population but not shown here, so these shares do not add up to 100%.
Male and female share
Women are 50.8% of the people living in St. Charles and men 49.2%.
- Women 50.8% Missouri 50.7%
- Men 49.2% Missouri 49.3%
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Economy
St. Charles has a the economy index of B, which means it is quite prosperous.
| Metric | St. Charles | Missouri Avg | U.S. Average |
|---|---|---|---|
| Median household income | $84,562 | $70,801 | $80,455 |
| Income growth (%/yr) | 5.05% | 4.56% | 4.80% |
| Unemployment rate | 2.8% | 4.0% | 5.2% |
The median household income in St. Charles is about 19% higher than in Missouri.
Housing
| Metric | St. Charles | Missouri Avg | U.S. Average |
|---|---|---|---|
| Median home price | $340,034 | $145,462 | $248,835 |
| Median rent | $1,236 | $1,033 | $1,407 |
| Homeownership rate | 68.1% | 68.1% | 65.2% |
The median home price in St. Charles is about 22.9 years' worth of rent — buying at the median price costs roughly as much as paying the median rent of $1,236 per month for that long.
Commute Time & Mobility
Commuters in St. Charles spend about 42 minutes on the road round trip each working day. Over a typical 250-day work year, that adds up to roughly 175 hours, about 7.3 full days, spent commuting.
| Metric | St. Charles | Missouri Avg | U.S. Average |
|---|---|---|---|
| One-way commute (min) | 21.0 | 21.0 | 22.4 |
| Round-trip commute (min) | 42.0 | 41.9 | 44.8 |
| Yearly time spent (hours) | 175 | 175 | 187 |
| Estimated yearly cost | $5,421 | $5,415 | $5,790 |
| Work from home | 17.8% | 13.0% | 15.0% |
| Highway traffic (vehicles/day) | 15,696 | 7,545 | 8,813 |
| Local road traffic (vehicles/day) | 2,776 | 923 | 1,355 |
The average commute time in St. Charles is about the same as in Missouri.
Estimated yearly cost applies a single national wage rule of thumb (U.S. Bureau of Labor Statistics average hourly earnings), not a measurement of wages in this area. Traffic volume figures come from proprietary Ticon and TrafficZoom data.
Education & Households
St. Charles has a education index of B, which means it is quite educated.
| Metric | St. Charles | Missouri Avg | U.S. Average |
|---|---|---|---|
| Bachelor's degree or higher | 37.3% | 28.8% | 31.6% |
| Average household size | 2.17 | 2.40 | 2.53 |
Health
St. Charles has a health index of B, which means it is quite healthy.
| Metric | St. Charles | Missouri Avg | U.S. Average |
|---|---|---|---|
| Life expectancy (years) | 78.6 | 76.9 | 78.3 |
| Self-rated poor health | 12.7% | 19.0% | 16.3% |
| Smokers | 16.3% | 22.8% | 19.0% |
St. Charles, MO Compared With Nearby Cities
St. Charles, MO is the largest of the 4 cities compared here, 68,558 residents against a local median of 34,682. Where St. Charles, MO breaks from the cities next to it is median home price, sitting 68% above the local median of $202,650 at $340,034.
The cities themselves spread $131,518 on median home price, so St. Charles, MO sits at one end of an already wide local range rather than apart from it. St. Charles, MO has the highest median home price of the 4 areas compared here.
| Area | Population | Median household income | Median home price | Commute |
|---|---|---|---|---|
| St. Charles, MO | 68,558 | $84,562 #3/4 | $340,034 #1/4 | 21.0 min #2/4 |
| Maryland Heights, MO | 34,682 | $87,820 | $230,180 | 20.3 min |
| St. Peters, MO | 58,257 | $94,320 | $202,650 | 21.4 min |
| Hazelwood, MO | 25,888 | $57,689 | $98,662 | 22.4 min |
Frequently Asked Questions
Common questions about St. Charles, Missouri.
How many people live in St. Charles, Missouri?
About 68,558 people live in St. Charles, Missouri, in 29,389 households of 2.2 people on average. The median age is 36.7, close to the U.S. median of 37.3.
Is St. Charles, Missouri mostly urban or rural?
Averaged over its land area, St. Charles, Missouri has 2,667 people per square mile, a density typical of urban and suburban areas. That is about 31 times the U.S. average of 86.
Can a typical household afford a home in St. Charles, Missouri?
The median home costs 4.0 times the median household income ($340,034 against $84,562), compared with 3.1 times nationally. A ratio of about 3 is traditionally considered affordable. Median rent of $1,236 a month takes about 18% of the median household's income, below the 30% level at which HUD considers renters cost-burdened.
Is unemployment high in St. Charles, Missouri?
Unemployment in St. Charles, Missouri is only 2.8%, well below the U.S. rate of 5.2%, a sign of a tight labor market where employers compete for workers.
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