| Locality | Post Code |
|---|---|
| Landing, Morris | 07850 |
| Ledgewood, Morris | 07852 |
| Lincoln Park, Morris | 07035 |
| Lindy Lake, Morris | 07405 |
| Long Valley, Morris | 07853 |
| Lower Montville, Morris | 07045 |
| Lyonsville, Morris | 07005 |
| Madison, Morris | 07940 |
| Mendham, Morris | 07945 |
| Mendham Township, Morris | 07945 |
| Meriden, Morris | 07005 |
| Millington, Morris | 07946 |
| Mine Hill, Morris | 07803 |
| Montville, Morris | 07045 |
| Morris Plains, Morris | 07950 |
| Morristown, Morris | 07960 |
| Mount Arlington, Morris | 07856 |
| Mount Freedom, Morris | 07970 |
| Mount Olive, Morris | 07828 |
| Mount Tabor, Morris | 07878 |
| Mountain Lakes, Morris | 07046 |
| Netcong, Morris | 07857 |
| New Vernon, Morris | 07976 |
| Parsippany, Morris | 07054 |
| Parsippany Troy Hills, Morris | 07054 |
| Pequannock, Morris | 07440 |