Boundary Maps

• Census ​Tracts by Jurisdiction​
  
• Block Groups by Jurisdiction​
  
• Census Places by Jurisdiction​
  
• Public Use Microdata Areas (PUMA's) by Jurisdiction​​
  
• ​ZIP Code Tabulation Areas ​(ZCTA​'s) by Jurisdiction​​
  
• ​Urban Areas by Jurisdiction​​
  
• Metropolitan Statistical Areas​
  

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.

• Congressional and Legislative District Mapping​​
  

​Zipcode Boundary Files

• 2017/2018​ | 2015/2016 | 2013/​2014
• ​​2012  |  2011  |  2010  |  2009  |  2008  |  2007  |  2006  |  2004  |  2002  |  2000  |  1997​

Historical Census Maps​