| Place Name | Afton |
| Place Type | Unincorporated |
| ZIP Code(s) | 53501 |
| County | Rock County |
| Area Code(s) | 608 |
| Timezone | Central Standard Time (CST) |
| Population () | |
| Metro/Micro Stats Area | Janesville-Beloit, WI |
| US Congressional District(s) | Wisconsin 2nd |
| State Assembly Districts | 43 |
| State Senate Districts | 15 |