City
| City / Place Name | ZIP | County | State | Longitude | Latitude |
|---|---|---|---|---|---|
| Forest City | 61532 | Mason | Illinois | -89.8334 | 40.3594 |
| Manito | 61546 | Mason | Illinois | -89.7898 | 40.416 |
| Topeka | 61567 | Mason | Illinois | -89.9312 | 40.3303 |
| Bath | 62617 | Mason | Illinois | -90.1661 | 40.1536 |
| Easton | 62633 | Mason | Illinois | -89.8903 | 40.2279 |
| Havana | 62644 | Mason | Illinois | -90.061 | 40.3 |
| Kilbourne | 62655 | Mason | Illinois | -90.0043 | 40.1587 |
| Mason City | 62664 | Mason | Illinois | -89.6982 | 40.2023 |
| San Jose | 62682 | Mason | Illinois | -89.6872 | 40.3011 |