Maps/GIS Downloads

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​​​​​​Boundary Tiger Shape Files by Geographic Level

Note: These files are land area only and do not include water area. if you want the full tiger files including water blocks, download them from Census Bureau web site​. The projected coordinate system is NAD83_StatPlane_Maryland_FIP_1900 meters.​

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Population Density​

On-line Mapping

2020 Redistricting Address Look-up


Congressional and Legislative Districts

Following each decennial Census of the United States, 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 principle of one-person-one-vote.


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​Zipcode Boundary Files


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Historical Census Maps​

2010 Redistricting Address Look-up