Janesville City Area Code List
| Area Codes |
Country |
State |
City |
Time Zone |
Operating |
| 319 |
US |
Iowa - IA |
Janesville |
Central |
Details |
| 507 |
US |
Minnesota - MN |
Janesville |
Central |
Details |
| 530 |
US |
California - CA |
Janesville |
Pacific |
Details |
| 608 |
US |
Wisconsin - WI |
Janesville |
Central |
Details |
