| Place Name | Fern Valley Township |
| Place Type | Township |
| ZIP Code(s) | 50528 50597 50598 |
| County | Palo Alto County |
| Area Code(s) | 515,712 |
| Timezone | Central Daylight Time (CDT) |
| Population (2021) | 155 |
| Majority Ethnicity | White 87.74% |
| US Congressional District(s) | Iowa 4th |
| State House Districts | 2 |
| State Senate Districts | 1 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 87.74% |
| African American | 0% |
| Hispanic | 0% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 12.26% |