| Place Name | Rock Rapids |
| Place Type | City |
| ZIP Code(s) | 51246 |
| County | Lyon County |
| Area Code(s) | 712 |
| Timezone | Central Daylight Time (CDT) |
| Population (2022) | 2,552 |
| Population Growth Rate (2010-19) | 2.43% |
| Majority Ethnicity | White 94.17% |
| US Congressional District(s) | Iowa 4th |
| State House Districts | 1 |
| State Senate Districts | 1 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 94.17% |
| African American | 0.27% |
| Hispanic | 0.12% |
| Asian | 1.01% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 4.43% |