Founded in 1809, Schenectady County is one of 62 counties in the state of New York. Historically, Schenectady County was formed from Albany County. The city of Schenectady is the county seat. With FIPS code of 93, Schenectady County has a population of 158,089 and area of 210 square miles (544 km2).
List of all cities in Schenectady County, NY alphabetically
| City/Town | Postal Code | Area Code |
| Alplaus, NY | 12008 | 518 |
| Bellevue, NY | 12306 | 518 |
| Braman Corners, NY | 12053 | 518 |
| Brandywine, NY | 12304 | 518 |
| Delanson, NY | 12053 | 518 |
| Duanesburg, NY | 12056 | 518 |
| East Glenville, NY | 12302 | 518 |
| General Electric, NY | 12345 | 518 |
| Glenville, NY | 12302 | 518 |
| Glenville, NY | 12325 | 518 |
| Lower Rotterdam, NY | 12306 | 518 |
| Mariaville, NY | 12137 | 518 |
| Niskayuna, NY | 12309 | 518 |
| Pattersonville, NY | 12137 | 518 |
| Princetown, NY | 12056 | 518 |
| Quaker Street, NY | 12141 | 518 |
| Rexford, NY | 12008 | 518 |
| Rotterdam, NY | 12306 | 518 |
| Rotterdam Junction, NY | 12150 | 518 |
| Rotterdam Square Branch, NY | 12306 | 518 |
| Schenectady, NY | 12008 | 518 |
| 12301 | 518 | |
| 12302 | 518 | |
| 12303 | 518 | |
| 12304 | 518 | |
| 12305 | 518 | |
| 12306 | 518 | |
| 12307 | 518 | |
| 12308 | 518 | |
| 12309 | 518 | |
| 12325 | 518 | |
| 12345 | 518 | |
| Scotia, NY | 12302 | 518 |
| Stoodley Corners, NY | 12302 | 518 |
| Upper Union, NY | 12309 | 518 |