| Locality | Post Code |
|---|---|
| Prairieview, Lake | 60069 |
| Riverwoods, Lake | 60015 |
| Round Lake, Lake | 60073 |
| Round Lake Beach, Lake | 60073 |
| Round Lake Heights, Lake | 60073 |
| Round Lake Park, Lake | 60073 |
| Russell, Lake | 60075 |
| Stanton Point, Lake | 60041 |
| Third Lake, Lake | 60030 |
| Timber Lake, Lake | 60010 |
| Tower Lakes, Lake | 60010 |
| Venetian Village, Lake | 60046 |
| Vernon Hills, Lake | 60061 |
| Volo, Lake | 60020, 60030, 60041, 60073 |
| Wadsworth, Lake | 60083 |
| Wauconda, Lake | 60084 |
| Waukegan, Lake | 60079, 60085, 60087 |
| West Miltmore, Lake | 60046 |
| Wildwood, Lake | 60030 |
| Winthrop Harbor, Lake | 60096 |
| Zion, Lake | 60099 |