| Place Name | Putnam Township (Linn County) |
| Place Type | Township |
| ZIP Code(s) | 52227 52314 52403 52404 |
| County | Linn County |
| Area Code(s) | 319 |
| Timezone | Central Standard Time (CST) |
| Population (2021) | 2,896 |
| Majority Ethnicity | White 94.03% |
| Metro/Micro Stats Area | Cedar Rapids, IA |
| US Congressional District(s) | Iowa 1st |
| State House Districts | 68 |
| State Senate Districts | 34 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 94.03% |
| African American | 0.84% |
| Hispanic | 0.23% |
| Asian | 1.27% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 3.62% |