Redistricting in your state:

In Pennsylvania, congressional districts are drawn by the state legislature by ordinary statute, and are subject to the governor's veto. State legislative districts are drawn by a commission of politicians called the Legislative Reapportionment Commission. The four legislative leaders each select one commission member. These four then choose a non-politician citizen to serve as the commission's chair.

In addition to the federal requirements of one person, one vote and the Voting Rights Act, Pennsylvania’s state constitution requires that state legislative districts: 

• be contiguous
• be compact
• preserve political subdivisions

In 2018, the Supreme Court of Pennsylvania issued an order applying these same criteria to congressional districts.

In the redistricting process, your state doesn't yet require consideration of communities of interest (COIs), but citizens can still present their own COIs to the redistricting commissions to advocate for fair representation. A community of interest is a population with longstanding shared cultural, historical, demographic, or economic interests. Communities of interest do not necessarily share the same political viewpoints or support for certain candidates or political parties.