Montgomery County Government makes standard GIS datasets publicly available at no cost. However, in some cases, the County may charge a fee ($75 per hour) to cover the cost to produce a non-standard GIS dataset.
Please check dataMontgomery first for the GIS datasets that are available from that site.
Additional datasets are available here:
To obtain a quote for a non-standard dataset, please complete the following Request for Quotation. Data (in 'shapefile' format) will be provided after full payment (if applicable) has been received.
M-NCPPC GIS Data
To order base map data layers such as property or planimetric data from the Maryland National Capital Park and Planning Commission (M-NCPPC), please visit M-NCPPC GIS Data Sales.
Other Data Sources
Washington DC Metropolitan Area
Montgomery County, Maryland