| Zip Code | City | Population ↓ |
|---|---|---|
| 12883 | Ticonderoga | 4,797 |
| 12946 | Lake Placid | 4,774 |
| 12944 | Keeseville | 3,887 |
| 12974 | Port Henry | 2,054 |
| 12996 | Willsboro | 1,983 |
| 12928 | Crown Point | 1,869 |
| 12941 | Jay | 1,692 |
| 12870 | Schroon Lake | 1,690 |
| 12993 | Westport | 1,634 |
| 12977 | Ray Brook | 1,324 |
| 12956 | Mineville | 1,248 |
| 12997 | Wilmington | 1,217 |
| 12932 | Elizabethtown | 1,090 |
| 12960 | Moriah | 900 |
| 12857 | Olmstedville | 738 |
| 12936 | Essex | 671 |
| 12950 | Lewis | 668 |
| 12942 | Keene | 516 |
| 12852 | Newcomb | 365 |
| 12851 | Minerva | 319 |
| 12943 | Keene Valley | 300 |
| 12998 | Witherbee | 294 |
| 12975 | Port Kent | 210 |
| 12855 | North Hudson | 207 |
| 12987 | Upper Jay | 152 |
| 12858 | Paradox | 146 |
| 12872 | Severance | 103 |
| 12961 | Moriah Center | 97 |
| 12964 | New Russia | 96 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 29 ZCTAs in Essex County, New York (US Census).