The Roman Catholic Diocese of Rochester is a diocese of the Catholic Church in the Greater Rochester region of New York State in the United States. The region that the Diocese comprises extends from its northern border on the south shore of Lake Ontario through the Finger Lakes region to its southern border at the New York-Pennsylvania border.
Cayuga County New York, Chemung County New York, Livingston County New York, Monroe County New York, Ontario County New York, Schuyler County New York, Seneca County New York, Steuben County New York, Tioga County New York, Tompkins County New York, Wayne County New York, Yates County New York, New York
