Pensylvania Redistricting
What's New - May 08, 2013

The Supreme Court unanimously approved the Legislative Reapportionment Commission's 2012 Revised Final Plan.

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May 08, 2013
The Supreme Court unanimously approved the Legislative Reapportionment Commission's 2012 Revised Final Plan.
June 08, 2012
The Legislative Reapportionment Commission adopts a revised final plan at a public administrative meeting. Watch the meeting. Details of the revised final plan can be found here (press release).
June 01, 2012
The Legislative Reapportionment Commission will hold a public hearing on June 8, 2012 at 2:00p.m. in Hearing Room 1, North Office Building, Harrisburg, Pennsylvania. The purpose of this meeting (agenda) is to vote on a final reapportionment plan.
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May 07, 2012
The Legislative Reapportionment Commission holds a public hearing on May 7, 2012 in Harrisburg. Watch the hearing
May 03, 2012
The Legislative Reapportionment Commission holds a public hearing on May 2, 2012 in Harrisburg. Watch the hearing
April 16, 2012
The Legislative Reapportionment Commission will hold a public hearing on May 2, 2012 at 2:00 p.m. in Hearing Room One - North Office Building, Harrisburg, PA (press release, view summary of testimony for May 2 and May 7).
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April 12, 2012
The Legislative Reapportionment Commission adopts a revised preliminary plan at a public administrative meeting (press release). Watch: Part 1 [WMV] Part 2 [WMV] Listen [MP3]. Details of the revised preliminary plan can be found here.
April 03, 2012
The Legislative Reapportionment Commission will hold a public meeting on April 12, 2012 at 1:00 p.m. in Senate Hearing Room 1 of the North Office Building. The purpose of this meeting (agenda) is to consider the adoption of a Preliminary Reapportionment Plan (press release).
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March 01, 2012
The 2011 Legislative Reapportionment Commission Public Meeting scheduled for Friday, March 2, 2012 at 1:00 p.m. in Senate Hearing Room 1 of the North Office Building has been postponed. This Public Meeting will be rescheduled for a later date (press release).

Welcome to Pennsylvania Redistricting


(2011) State Senate: PDF Map, SHAPE files, KML files

(2011) State House: PDF Map, SHAPE files, KML files

(2018) U.S. Congress: Map, SHAPE files, KML files


You can also explore the new districts in these interactive maps.


This website provides information about the redistricting process in Pennsylvania, including information about the Legislative Reapportionment Commission created by the state Constitution, access to the geography and population data used for redistricting, interactive maps, and more.

Redistricting is the process by which the boundaries of elective districts are periodically redrawn to maintain equal representation on the basis of population.

Article 1, Section 2, of the United States Constitution requires that a Census be taken every 10 years for the purpose of apportioning the United States House of Representatives. Census results are used to determine the number of congressional seats apportioned to each state. After the 2000 federal Census, Pennsylvania had 19 members in the U.S. House of Representatives. Following the 2010 federal Census, Pennsylvania has 18 members of the U.S. House. More information on the Census is available at census.gov.

In addition to being used as a basis for apportioning seats in the U.S. House of Representatives, Census data is also used in Congressional and Legislative redistricting.

Public Law 94-171, enacted by Congress in December 1975, requires the Census Bureau to deliver redistricting data to state officials responsible for legislative redistricting no later than April 1, 2011. More information on the redistricting data program is available at www.census.gov/rdo/.

PA

2011-12 Legislative Reapportionment Commission

The 2011-12 Legislative Reapportionment Commission has completed its work and has been disbanded.