| Place Name | Callender |
| Place Type | City |
| ZIP Code(s) | 50523 |
| County | Webster County |
| Area Code(s) | 515 |
| Timezone | Central Daylight Time (CDT) |
| Population (2022) | 389 |
| Population Growth Rate (2010-19) | -2.13% |
| Majority Ethnicity | White 94% |
| Metro/Micro Stats Area | Fort Dodge, IA |
| US Congressional District(s) | Iowa 4th |
| State House Districts | 10 |
| State Senate Districts | 5 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 94% |
| African American | 0% |
| Hispanic | 0.72% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 5.28% |