Serving Erie, Cameron, Clarion, Clearfield, Crawford, Elk, Forest, Jefferson, McKean, Mercer, Potter, Venango and Warren counties. Diocesan archives do not contain baptismal, marriage or death records. Researchers are requested to contact their ancestor's parish directly.
Serving Allegheny, Beaver, Butler, Greene, Lawrence and Washington counties. The Diocese of Pittsburgh Archives and Records Center website offers genealogical tips for researching Catholic ancestors including the rules for access to sacramental records and a map of Pittsburgh-area parishes.