Use this Allegheny County, PA county government directory to find phone numbers, information & website links for all the city government & municipal government offices. Find the information about Allegheny County law enforcement agencies, such as probation & parole, the public defender, the district attorney & the county courthouse. Find places to obtain a passport in Allegheny County, PA listed here. Also find phone numbers for the Allegheny County libraries and parks in Allegheny County, PA. Any Allegheny County government phone numbers you will need can be found right here!