| Place Name | St. Charles |
| Place Type | City |
| ZIP Code(s) | 50240 |
| County | Madison County |
| Area Code(s) | 641 |
| Timezone | Central Standard Time (CST) |
| Population (2022) | 674 |
| Population Growth Rate (2010-19) | -1.99% |
| Majority Ethnicity | White 99.02% |
| Metro/Micro Stats Area | Des Moines-West Des Moines, IA |
| US Congressional District(s) | Iowa 3rd |
| State House Districts | 25 |
| State Senate Districts | 13 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 99.02% |
| African American | 0.42% |
| Hispanic | 0% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 0.56% |