| Place Name | St. Charles |
| Place Type | City |
| ZIP Code(s) | 83261 83272 83287 |
| County | Bear Lake County |
| Area Code(s) | 208 |
| Timezone | Mountain Daylight Time (MDT) |
| Population (2022) | 89 |
| Population Growth Rate (2010-19) | 22.90% |
| Majority Ethnicity | White 82.4% |
| US Congressional District(s) | Idaho 2nd |
| State House Districts | 32 |
| State Senate Districts | 32 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 82.4% |
| African American | 0% |
| Hispanic | 6.4% |
| Asian | 4.8% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 6.4% |