| Place Name | St. Ansgar |
| Place Type | City |
| ZIP Code(s) | 50472 |
| County | Mitchell County |
| Area Code(s) | 641 |
| Timezone | Central Daylight Time (CDT) |
| Population (2022) | 1,187 |
| Population Growth Rate (2010-19) | 4.79% |
| Majority Ethnicity | White 93.82% |
| US Congressional District(s) | Iowa 1st |
| State House Districts | 51 |
| State Senate Districts | 26 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 93.82% |
| African American | 0% |
| Hispanic | 0% |
| Asian | 1.25% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 4.92% |