New York Gazetteer
The 518 area code is used by SOME cities and towns in these Counties:
| Albany County | Cities & Towns | ZIP Codes | Features |
| Clinton County | Cities & Towns | ZIP Codes | Features |
| Columbia County | Cities & Towns | ZIP Codes | Features |
| Dutchess County | Cities & Towns | ZIP Codes | Features |
| Essex County | Cities & Towns | ZIP Codes | Features |
| Franklin County | Cities & Towns | ZIP Codes | Features |
| Fulton County | Cities & Towns | ZIP Codes | Features |
| Greene County | Cities & Towns | ZIP Codes | Features |
| Hamilton County | Cities & Towns | ZIP Codes | Features |
| Montgomery County | Cities & Towns | ZIP Codes | Features |
| Rensselaer County | Cities & Towns | ZIP Codes | Features |
| Saint Lawrence County | Cities & Towns | ZIP Codes | Features |
| Saratoga County | Cities & Towns | ZIP Codes | Features |
| Schenectady County | Cities & Towns | ZIP Codes | Features |
| Schoharie County | Cities & Towns | ZIP Codes | Features |
| Warren County | Cities & Towns | ZIP Codes | Features |
| Washington County | Cities & Towns | ZIP Codes | Features |
