Montgomery County GIS Portal (Maryland)

Search for Montgomery County, MD GIS maps. A GIS map search can provide information like county maps, town maps, city maps, local maps, property maps, parcel maps, plat maps, public property, property tax assessments, flood zones, zoning boundaries, geographic information, historical maps, and property tax information.


Montgomery County Assessor Offices are charged with determining the value of taxable property in their county or local area in order to calculate Montgomery County property taxes. In addition to property values, Assessors maintain detailed county and local maps, including Geographic Information Science (GIS) maps. These Montgomery County GIS maps can show public property, parks, property divisions, and roads, as well as property assessments and property taxes in Montgomery County, Maryland. These maps can also include place names, bodies of water, flood zones, property zones, and other geographic information. Some Assessors may keep historic GIS maps that include historic property tax assessments. These maps may be available on the Montgomery County Assessor Office website.

Montgomery County Assessment Office Rockville MD 30 West Gude Drive 20850 240-314-4510


Montgomery County Town and City Halls provide municipal services for their town or city, including preserving vital records and maintaining records on their jurisdiction such as Montgomery County GIS maps. The GIS maps at a Montgomery County Town or City Hall can include property boundaries, public property, unclaimed parcels, and roads, as well as appraisal values for properties and property tax assessments in Montgomery County, Maryland. These GIS maps may also show population information, place names, zoning boundaries, bodies of water, flood zones, and other geographic information. Some Town and City Halls also have historical maps of their area. These maps are often available to the public on the Montgomery County Town and City Hall website.

Barnesville Town Hall Barnesville MD 18001 Barnesville Road 20838 240-489-3036

Chevy Chase Town Hall Chevy Chase MD 4301 Willow Lane 20815 301-654-7144

Gaithersburg City Hall Gaithersburg MD 31 South Summit Avenue 20877 301-258-6300

Glen Echo Town Hall Glen Echo MD 6106 Harvard Avenue 20812 301-320-4041

Kensington Town Hall Kensington MD 3710 Mitchell Street 20895 301-949-2424

Laytonsville Town Hall Gaithersburg MD 21607 Laytonsville Road 20882 301-869-0042

Poolesville Town Hall Poolesville MD 19721 Beall St 20837 301-428-8927

Rockville City Hall Rockville MD 111 Maryland Avenue 20850 240-314-5000

Somerset Town Hall Chevy Chase MD 4510 Cumberland Avenue 20815 301-657-3211

Takoma Park City Hall Takoma Park MD 7500 Maple Avenue 20912 301-891-7100

Washington Grove Town Hall Washington Grove MD 300 Grove Avenue 20880 301-926-2256


Montgomery County Clerk Offices maintain public records for a county or local government, which includes GIS maps. These maps provide detailed information on the area, including Montgomery County property maps that show boundaries, public property, property divisions, and in some cases, population information in Montgomery County, Maryland. They may also include property value assessments and property tax rates. Montgomery County GIS maps can show place names, bodies of water, zoning information, flood zones, and other geographic information. Clerks may also have historic GIS maps from the USGS or other organizations, and these maps are often available online through the Clerk Office website.

Montgomery County Clerk Rockville MD 50 Maryland Avenue 20850 240-777-9464


Montgomery County Recorders of Deeds keep real estate records to ensure the accuracy of property and land records. In addition to deeds, Recorders of Deeds also have detailed county and local maps, including Montgomery County GIS maps that show property lines, building information, public property, unclaimed parcels, as well as property value assessments and property tax information. These GIS maps may also include place names, zoning boundaries, bodies of water, flood zones, and other geographic information in Montgomery County, Maryland. The Recorder of Deeds may also have historic GIS maps. These maps are often available on the Montgomery County Recorder of Deeds website.

Montgomery County Recorder of Deeds Rockville MD 50 Maryland Avenue 20850 240-777-9466