| Place Name | Jennings |
| Place Type | City |
| ZIP Code(s) | 67643 |
| County | Decatur County |
| Area Code(s) | 785 |
| Timezone | Central Daylight Time (CDT) |
| Population (2022) | 177 |
| Population Growth Rate (2010-19) | -15.63% |
| Majority Ethnicity | White 94.81% |
| US Congressional District(s) | Kansas 1st |
| State House Districts | 120 |
| State Senate Districts | 40 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 94.81% |
| African American | 5.19% |
| Hispanic | 0% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 0% |