| Place Name | Garwin |
| Place Type | City |
| ZIP Code(s) | 50632 |
| County | Tama County |
| Area Code(s) | 641 |
| Timezone | Central Standard Time (CST) |
| Population (2022) | 631 |
| Population Growth Rate (2010-19) | -8.73% |
| Majority Ethnicity | White 90.48% |
| US Congressional District(s) | Iowa 1st |
| State House Districts | 72 |
| State Senate Districts | 36 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 90.48% |
| African American | 0.83% |
| Hispanic | 0.28% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 8.41% |