U.S. Congressional Delegations from Pennsylvania

These are tables of congressional delegations from Pennsylvania to the United States House of Representatives and the United States Senate.

List of members of the Pennsylvanian United States House delegation, their terms in office, district boundaries, and the district political ratings according to the CPVI. The delegation has a total of 17 members, with 12 Republicans, and 5 Democrats. One seat is currently vacant.

Tables showing membership in the Pennsylvania federal House delegation throughout history of statehood in the United States.

For the first two Congresses, Pennsylvania had eight seats. In the First Congress, Representatives were selected At-large on a general ticket. Districts were used in the Second Congress.

Pennsylvania had thirteen seats. For the third Congress Representatives were selected At-large on a general ticket. After that, districts were created.

There were eighteen seats, apportioned among eleven districts. Districts 1–3 each had three seats elected on a general ticket. District 4 had two such seats. Districts 5–11 each had one seat.

There were 15 districts. The 1st district had four seats elected on a general ticket. The 2nd, 3rd, 5th, 6th and 10th each had two seats elected on a general ticket. The rest of the districts each had one seat.

Following the 1830 census, Pennsylvania was apportioned 28 seats. The commonwealth divided them into 25 districts and two districts, the 2nd and the 4th, had two and three seats respectively.

Following the 1880 Census, the delegation grew by one seat. Until 1889, that seat was elected at-large statewide. After 1889, the state was redistricted into 28 districts.

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