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County
Census Block Groups by Population Density (2012 ACS)
Montgomery County of Maryland —
U.S. Census Block Groups represents the U.S. Census block groups of the United States in the 50 states, the District of Columbia, and Puerto Rico. -
County
Census Block Groups 2010 (geographic data)
Montgomery County of Maryland —
Block groups from 2010 Census, adapted from US Census Bureau -
County
BLKGRP2010
Montgomery County of Maryland —
Block groups from 2010 Census, adapted from US Census Bureau