Howard County GIS Portal (Maryland)

Search for Howard 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.


Howard County Assessor Offices are charged with determining the value of taxable property in their county or local area in order to calculate Howard County property taxes. In addition to property values, Assessors maintain detailed county and local maps, including Geographic Information Science (GIS) maps. These Howard County GIS maps can show public property, parks, property divisions, and roads, as well as property assessments and property taxes in Howard 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 Howard County Assessor Office website.

Howard County Assessment Office Ellicott City MD 3451 Court House Drive 21043 410-480-7940


Howard 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 Howard County property maps that show boundaries, public property, property divisions, and in some cases, population information in Howard County, Maryland. They may also include property value assessments and property tax rates. Howard 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.

Howard County Clerk Ellicott City MD 8360 Court Avenue 21043 410-313-3825


Howard 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 Howard 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 Howard County, Maryland. The Recorder of Deeds may also have historic GIS maps. These maps are often available on the Howard County Recorder of Deeds website.

Howard County Recorder of Deeds Columbia MD 9250 Bendix Road 21045 410-313-5850