| Place Name | Peterson |
| Place Type | City |
| ZIP Code(s) | 51047 |
| County | Clay County |
| Area Code(s) | 712 |
| Timezone | Central Daylight Time (CDT) |
| Population (2022) | 321 |
| Population Growth Rate (2010-19) | -3.59% |
| Majority Ethnicity | White 97.08% |
| Metro/Micro Stats Area | Spencer, IA |
| US Congressional District(s) | Iowa 4th |
| State House Districts | 2 |
| State Senate Districts | 1 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 97.08% |
| African American | 0.22% |
| Hispanic | 0.67% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 2.02% |