| Locality | Post Code |
|---|---|
| Adams Lake, Lagrange | 46795 |
| Brighton, Lagrange | 46746 |
| Brushy Prairie, Lagrange | 46761 |
| Elmira, Lagrange | 46761 |
| Fish Lake, Lagrange | 46761 |
| Howe, Lagrange | 46746 |
| Lagrange, Lagrange | 46761 |
| Lakeside, Lagrange | 46795 |
| Lima, Lagrange | 46746 |
| Mongo, Lagrange | 46771 |
| Mount Pisgah, Lagrange | 46761 |
| Plato, Lagrange | 46761 |
| Pretty Lake, Lagrange | 46795 |
| Royer Lake, Lagrange | 46761 |
| Shady Nook, Lagrange | 46795 |
| Shipshewana, Lagrange | 46565 |
| South Milford, Lagrange | 46786 |
| Stroh, Lagrange | 46789 |
| Timberhurst, Lagrange | 46795 |
| Topeka, Lagrange | 46571 |
| Valentine, Lagrange | 46761 |
| Wildwood Landing, Lagrange | 46789 |
| Witmer Manor, Lagrange | 46795 |
| Wolcottville, Lagrange | 46795 |
| Woodland Park, Lagrange | 46795 |
| Woodruff, Lagrange | 46795 |