| | Allegany village | 3600901286 | NY | 3601286 | Incorporated Place | Olean, NY 36460 | Buffalo-Cheektowaga-Olean,
NY 160 |
| | Cattaraugus village | 3600913024 | NY | 3613024 | Incorporated Place | Olean, NY 36460 | Buffalo-Cheektowaga-Olean,
NY 160 |
| | Delevan village | 3600920115 | NY | 3620115 | Incorporated Place | Olean, NY 36460 | Buffalo-Cheektowaga-Olean,
NY 160 |
| | East Randolph CDP | 3600922843 | NY | 3622843 | Census Designated Place | Olean, NY 36460 | Buffalo-Cheektowaga-Olean,
NY 160 |
| | Ellicottville village | 3600924020 | NY | 3624020 | Incorporated Place | Olean, NY 36460 | Buffalo-Cheektowaga-Olean,
NY 160 |
| | Franklinville village | 3600927331 | NY | 3627331 | Incorporated Place | Olean, NY 36460 | Buffalo-Cheektowaga-Olean,
NY 160 |
| | Gowanda village (part) | 3600929630 | NY | 3629630 | Incorporated Place | Olean, NY 36460 | Buffalo-Cheektowaga-Olean,
NY 160 |
| | Lime Lake CDP | 3600942345 | NY | 3642345 | Census Designated Place | Olean, NY 36460 | Buffalo-Cheektowaga-Olean,
NY 160 |
| | Limestone CDP | 3600942378 | NY | 3642378 | Census Designated Place | Olean, NY 36460 | Buffalo-Cheektowaga-Olean,
NY 160 |
| | Little Valley village | 3600942829 | NY | 3642829 | Incorporated Place | Olean, NY 36460 | Buffalo-Cheektowaga-Olean,
NY 160 |