Baltimore County GIS Data (Maryland)

Search for Baltimore County, MD GIS data. A GIS data search can provide information on GIS maps, property lines, county lines, city lines, public property, elevations, flood zones, school boundaries, earthquake zones, property appraisal values, erosion, water pollutants, topography, soil composition, sewers, public utilities, building hazards, population information, demographic information, place names, public property, parks, campgrounds, trails, trail maps, historic maps, historic GIS maps, town maps, county maps, city maps, and neighborhood boundaries.


An Assessor Office is responsible for appraising the taxable property in an area in order to calculate property taxes in Baltimore County, Maryland. As part of this job, Baltimore County Assessors maintain detailed county and local maps, including Geographic Information Science (GIS) data. These Baltimore County GIS maps typically include property divisions, plots, buildings, property appraisal values, and property taxes. They may also include public property, parks, roads, place names, bodies of water, and other local geographical information, as well as flood zones, county zone lines, and school boundaries. These maps can be useful for a number of reasons, including buying and selling property. Assessors may provide online access to their Baltimore County GIS data on their websites.

Baltimore County Assessment Office Towson MD 300 East Joppa Road 21286 410-512-4900


A Building Department creates and enforces building codes and zoning regulations in order to ensure the construction of safe buildings in Baltimore County, Maryland. As part of that job, Building Departments maintain GIS data that can include Baltimore County GIS maps on the topography, elevation, soil composition, and flood zones for the local area. This information can be important for adhering to building codes and meeting zoning rules. These GIS maps may also show Baltimore County parcels, lots, subdivisions, and tracts of land, as well as sewers, public utilities, and other building hazards. GIS data may be available on the Building Department website.

Baltimore County Building Department Towson MD 111 West Chesapeake Avenue 21204 410-887-3953

Baltimore County Permits Towson MD 111 West Chesapeake Avenue 21204 410-887-3335

Maryland State Permits Lutherville MD 57 West Timonium Road 21093 410-561-1901


A Clerk Office maintains public records for a county or local government, including GIS data in the form of maps. These GIS maps provide detailed information such as property boundaries, roads, public property, parks, and in some cases, population and demographic information. GIS data can also show Baltimore County property value assessments, property taxes, flood zones, zoning boundaries, and earthquake zones, as well as place names, bodies of water, and other geographic information. Clerks may also have historic GIS maps from the USGS or other organizations. Baltimore County GIS data is often accessible through the Clerk Office website.

Baltimore County Clerk Towson MD 401 Bosley Avenue 21204 410-887-2601