| Place Name | Janesville Township |
| Place Type | Township |
| ZIP Code(s) | 66853 67045 |
| County | Greenwood County |
| Area Code(s) | 620 |
| Timezone | Central Daylight Time (CDT) |
| Population (2021) | 375 |
| Majority Ethnicity | White 96.93% |
| US Congressional District(s) | Kansas 4th |
| State House Districts | 13 |
| State Senate Districts | 14 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 96.93% |
| African American | 0% |
| Hispanic | 0% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 3.07% |