| Place Name | La Harpe |
| Place Type | City |
| ZIP Code(s) | 66751 |
| County | Allen County |
| Area Code(s) | 620 |
| Timezone | Central Daylight Time (CDT) |
| Population (2022) | 656 |
| Population Growth Rate (2010-19) | -16.96% |
| Majority Ethnicity | White 90.7% |
| US Congressional District(s) | Kansas 2nd |
| State House Districts | 9 |
| State Senate Districts | 12 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 90.7% |
| African American | 0% |
| Hispanic | 0.33% |
| Asian | 0.66% |
| Native American | 0.17% |
| Hawaiin/Pacific Islander | 8.14% |