25 ZIP Codes
| Zip Code | City | Population ↓ |
|---|---|---|
| 12901 | Plattsburgh | 31,447 |
| 12972 | Peru | 6,895 |
| 12962 | Morrisonville | 5,654 |
| 12992 | West Chazy | 4,615 |
| 12919 | Champlain | 2,961 |
| 12929 | Dannemora | 2,684 |
| 12979 | Rouses Point | 2,465 |
| 12918 | Cadyville | 2,412 |
| 12921 | Chazy | 2,304 |
| 12981 | Saranac | 2,259 |
| 12910 | Altona | 1,890 |
| 12958 | Mooers | 1,827 |
| 12903 | Plattsburgh | 1,824 |
| 12912 | Au Sable Forks | 1,682 |
| 12959 | Mooers Forks | 1,627 |
| 12935 | Ellenburg Depot | 1,180 |
| 12934 | Ellenburg Center | 1,120 |
| 12985 | Schuyler Falls | 755 |
| 12923 | Churubusco | 532 |
| 12955 | Lyon Mountain | 503 |
| 12978 | Redford | 340 |
| 12924 | Keeseville | 333 |
| 12952 | Lyon Mountain | 286 |
| 12911 | Keeseville | 41 |
| 12933 | Ellenburg | 7 |
The data shown reflect ZCTAs from the US Census. As of 2025, there are 25 ZCTAs in Clinton County, New York (US Census).