Maryland Redistricting

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image of Capitol Hill2010 Redistricting

Maryland, like all states, must draw new Congressional districts (U.S. Constitution Article I, Section 2) and State Legislative districts (Maryland Constitution Article III, Section 5) based on the principal of one-person one-vote following the decennial Census of the United States.

The Maryland Department of Planning (MDP) is the repository of Reapportionment and Redistricting maps and data products. MDP is Maryland's designated State Agency coordinator for the Census Redistricting Data Program with the U.S. Bureau of the Census.

Office of the Governor
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Data for Download


For use by geographic information system (GIS) users

Governor Martin O'Malley's 2012 Legislative Redistricting Plan

  • Equivalency Files

       XLSX    TXT    DBF

  • Shapefiles

        SHP


Maryland's existing districts were adopted in 2002. The redistricting process began with the Census count in spring of 2010. After public hearings, review and analysis of proposed plans, the revised districts will be adopted. The new districts will be in place in time for the Congressional primary of 2012 and the State Legislative Election of 2014.