14 cities
| City | County | 2026 Pop. ↓ |
|---|---|---|
| York | York County | 45,469 |
| York | York County | 32,482 |
| Yeadon | Delaware County | 12,590 |
| Youngwood | Westmoreland County | 2,875 |
| Yardley | Bucks County | 2,585 |
| Young | Indiana County | 1,683 |
| Young | Jefferson County | 1,643 |
| Youngsville | Warren County | 1,631 |
| Yoe | York County | 1,065 |
| York Springs | Adams County | 713 |
| York Haven | York County | 697 |
| Yatesville | Luzerne County | 652 |
| Youngstown | Westmoreland County | 240 |
| Yorkana | York County | 238 |