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Interactive Demographic Map
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The Montgomery County Planning Department provides Census 2010 demographic category data for census block group areas within Montgomery County in an interactive map.  The data in the map represents the results of Census 2010 and supplemental data will be added periodically to include American Community Survey results.

For convenience, the map is centered on Rockville but the entire county and a number of cities can be viewed by selecting them from the "Zoom to:" menu.  Use the zoom slider tool on the map or scroll the mouse wheel to view smaller or larger areas.

• Click on block group areas (outlined in purple on the map) to toggle them on or off and to display their data. The table at the bottom breaks out data for each selected block group. Selecting additional block group areas will add data rows to the table so they can be compared.
• Click on any row in the table to zoom to the corresponding block group area.  Use the horizontal slider bar under the table to see all of the data categories.

The table at the right of the map shows summed data for all selected areas combined. If no areas are selected, Countywide data is shown.

• Select "Clear Selection" button to clear selected block groups areas along with their data results while leaving the map at the same location.
• Select the "Start Over" button to both clear the selected block group areas with their data and to return the map to the full view of Rockville.

 If you have any questions, contact Manisha Tewari at 240-314-8213.