| Place Name | Warsaw |
| Place Type | City |
| ZIP Code(s) | 62379 |
| County | Hancock County |
| Area Code(s) | 217 |
| Timezone | Central Daylight Time (CDT) |
| Population (2022) | 1,581 |
| Population Growth Rate (2010-19) | -6.04% |
| Majority Ethnicity | White 98.51% |
| Metro/Micro Stats Area | Fort Madison-Keokuk, IA-IL-MO |
| US Congressional District(s) | Illinois 18th |
| State House Districts | 94,4 |
| State Senate Districts | 47,18 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 98.51% |
| African American | 0.25% |
| Hispanic | 0% |
| Asian | 0% |
| Native American | 0.25% |
| Hawaiin/Pacific Islander | 0.99% |