Founded in 1788, Clinton County is one of 62 counties in the state of New York. Historically, Clinton County was formed from Washington County. The city of Plattsburgh is the county seat. With FIPS code of 19, Clinton County has a population of 79,596 and area of 1,118 square miles (2,896 km2).
List of all cities in Clinton County, NY alphabetically
| City/Town | Postal Code | Area Code |
| Alder Bend, NY | 12910 | 518 |
| Altona, NY | 12910 | 518 |
| Au Sable Chasm, NY | 12911 | 518 |
| Au Sable Forks, NY | 12912 | 518 |
| Ausable Chasm, NY | 12911 | 518 |
| Beekmantown, NY | 12901 | 518 |
| Cadyville, NY | 12918 | 518 |
| Champlain, NY | 12919 | 518 |
| Chazy, NY | 12921 | 518 |
| Chazy Landing, NY | 12921 | 518 |
| Churubusco, NY | 12923 | 518 |
| Clintonville, NY | 12924 | 518 |
| Coopersville, NY | 12919 | 518 |
| Dannemora, NY | 12929 | 518 |
| Ellenburg, NY | 12933 | 518 |
| Ellenburg Center, NY | 12934 | 518 |
| Ellenburg Depot, NY | 12935 | 518 |
| Harkness, NY | 12972 | 518 |
| Hawkeye, NY | 12912 | 518 |
| Ingraham, NY | 12992 | 518 |
| Irona, NY | 12910 | 518 |
| Keeseville, NY | 12911 | 518 |
| 12924 | 518 | |
| 12944 | 518 | |
| Lyon Mountain, NY | 12952 | 518 |
| 12955 | 518 | |
| Merrill, NY | 12955 | 518 |
| Mooers, NY | 12958 | 518 |
| Mooers Forks, NY | 12959 | 518 |
| Morrisonville, NY | 12962 | 518 |
| Peasleeville, NY | 12985 | 518 |
| Perrys Mills, NY | 12919 | 518 |
| Peru, NY | 12972 | 518 |
| Plattsburgh, NY | 12901 | 518 |
| 12903 | 518 | |
| Purdys Mills, NY | 12910 | 518 |
| Redford, NY | 12978 | 518 |
| Rouses Point, NY | 12979 | 518 |
| Saranac, NY | 12981 | 518 |
| Schuyler Falls, NY | 12985 | 518 |
| Sciota, NY | 12992 | 518 |
| South Plattsburgh, NY | 12901 | 518 |
| Standish, NY | 12952 | 518 |
| Swastika, NY | 12985 | 518 |
| West Chazy, NY | 12992 | 518 |
| West Plattsburgh, NY | 12962 | 518 |