| Locality | Post Code |
|---|---|
| Bloomingdale, Essex | 12913 |
| Blue Ridge, Essex | 12870 |
| Chilson, Essex | 12883 |
| Crown Point, Essex | 12928 |
| Eagle Lake, Essex | 12883 |
| Elizabethtown, Essex | 12932 |
| Essex, Essex | 12936 |
| Factoryville, Essex | 12928 |
| Grover Hills, Essex | 12956 |
| Ironville, Essex | 12928 |
| Jay, Essex | 12941 |
| Keene, Essex | 12942 |
| Keene Valley, Essex | 12943 |
| Lake Placid, Essex | 12946 |
| Lewis, Essex | 12950 |
| Minerva, Essex | 12851 |
| Mineville, Essex | 12956 |
| Moriah, Essex | 12960 |
| Moriah Center, Essex | 12961 |
| Moriah Corners, Essex | 12960 |
| New Russia, Essex | 12964 |
| Newcomb, Essex | 12852 |
| North Hudson, Essex | 12855 |
| Olmstedville, Essex | 12857 |
| Paradox, Essex | 12858 |
| Paradox Lake, Essex | 12858 |