St. Charles County, MO
Demographics & Statistics
Updated: 2025-10-25
Updated: 2025-10-25
Life in St. Charles County research summary. HomeSnacks has been researching the quality of life in St. Charles County over the past eight years using Census data, FBI crime data, cost of living data, and other primary sources. Based on the most recently available data, we found the following about life in St. Charles County:
The population in St. Charles County is 409,830.
The median home value in St. Charles County is $355,072.
The median income in St. Charles County is $102,912.
The median rent in St. Charles County is $1,312.
The unemployment rate in St. Charles County is 2.8%.
The poverty rate in St. Charles County is 4.7%.
The average high in St. Charles County is 73.1° and there are 98.0 inches of rainfall annually.
The average high in St. Charles County is 73.1°.
There are 80.13 nice days each year.
Expect an average of 98.0 inches of rain each year with 5.3 inches of snow.
There is an average of 5:12 hours of sun each day in St. Charles County.
| Stat | St. Charles County |
|---|---|
| Mean High | 73.1 |
| Nice Days | 80.13 |
| Rainfall | 98.0 |
| Snowfall | 5.3 |
| Sunny Hours | 5:12 |
The current population in St. Charles County is 409,830. The population has increased 2.1% from 2019.
| Year | Population | % Change |
|---|---|---|
| 2023 | 402,377 | 1.0% |
| 2022 | 398,472 | 1.1% |
| 2021 | 394,290 | - |
St. Charles County is 50.6% female with 207,170 female residents.
St. Charles County is 49.4% male with 202,660 male residents.
| Gender | St. Charles County | MO | USA |
|---|---|---|---|
| Female | 50.6% | 50.7% | 50.5% |
| Male | 49.4% | 49.3% | 49.5% |
St. Charles County is:
83.9% White with 343,815 White residents.
4.9% African American with 20,228 African American residents.
0.0% American Indian with 161 American Indian residents.
2.8% Asian with 11,579 Asian residents.
0.0% Hawaiian with 157 Hawaiian residents.
0.3% Other with 1,210 Other residents.
3.9% Two Or More with 16,134 Two Or More residents.
4.0% Hispanic with 16,546 Hispanic residents.
| Race | St. Charles County | MO | USA |
|---|---|---|---|
| White | 83.9% | 76.8% | 58.2% |
| African American | 4.9% | 11.0% | 12.0% |
| American Indian | 0.0% | 0.2% | 0.5% |
| Asian | 2.8% | 2.1% | 5.7% |
| Hawaiian | 0.0% | 0.1% | 0.2% |
| Other | 0.3% | 0.4% | 0.5% |
| Two Or More | 3.9% | 4.4% | 3.9% |
| Hispanic | 4.0% | 5.1% | 19.0% |
2.3% of households in St. Charles County earn Less than $10,000.
1.3% of households in St. Charles County earn $10,000 to $14,999.
3.3% of households in St. Charles County earn $15,000 to $24,999.
4.0% of households in St. Charles County earn $25,000 to $34,999.
9.2% of households in St. Charles County earn $35,000 to $49,999.
14.6% of households in St. Charles County earn $50,000 to $74,999.
13.4% of households in St. Charles County earn $75,000 to $99,999.
22.8% of households in St. Charles County earn $100,000 to $149,999.
14.0% of households in St. Charles County earn $150,000 to $199,999.
15.1% of households in St. Charles County earn $200,000 or more.
| Income | St. Charles County | MO | USA |
|---|---|---|---|
| Less than $10,000 | 2.3% | 4.8% | 4.9% |
| $10,000 to $14,999 | 1.3% | 4.0% | 3.6% |
| $15,000 to $24,999 | 3.3% | 7.6% | 6.6% |
| $25,000 to $34,999 | 4.0% | 7.9% | 6.8% |
| $35,000 to $49,999 | 9.2% | 12.2% | 10.4% |
| $50,000 to $74,999 | 14.6% | 17.5% | 15.7% |
| $75,000 to $99,999 | 13.4% | 13.3% | 12.7% |
| $100,000 to $149,999 | 22.8% | 16.9% | 17.4% |
| $150,000 to $199,999 | 14.0% | 7.7% | 9.3% |
| $200,000 or more | 15.1% | 8.1% | 12.6% |
1.0% of adults in St. Charles County completed < 9th grade.
3.0% of adults in St. Charles County completed 9-12th grade.
23.0% of adults in St. Charles County completed high school / ged.
21.0% of adults in St. Charles County completed some college.
9.0% of adults in St. Charles County completed associate's degree.
27.0% of adults in St. Charles County completed bachelor's degree.
13.0% of adults in St. Charles County completed master's degree.
2.0% of adults in St. Charles County completed professional degree.
1.0% of adults in St. Charles County completed doctorate degree.
| Education | St. Charles County | MO | USA |
|---|---|---|---|
| < 9th Grade | 0% | 3% | 5% |
| 9-12th Grade | 3% | 6% | 6% |
| High School / GED | 23% | 30% | 26% |
| Some College | 21% | 21% | 19% |
| Associate's Degree | 9% | 8% | 9% |
| Bachelor's Degree | 27% | 20% | 21% |
| Master's Degree | 13% | 9% | 10% |
| Professional Degree | 2% | 2% | 2% |
| Doctorate Degree | 1% | 1% | 2% |
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