| Place Name | Garnavillo Township |
| Place Type | Township |
| ZIP Code(s) | 52043 52049 52052 52072 |
| County | Clayton County |
| Area Code(s) | 563 |
| Timezone | Central Standard Time (CST) |
| Population (2021) | 816 |
| Majority Ethnicity | White 95.91% |
| US Congressional District(s) | Iowa 1st |
| State House Districts | 56 |
| State Senate Districts | 28 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 95.91% |
| African American | 0% |
| Hispanic | 0% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 4.09% |