Howard County GIS Data (Maryland)

Search for Howard 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 Howard County, Maryland. As part of this job, Howard County Assessors maintain detailed county and local maps, including Geographic Information Science (GIS) data. These Howard 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 Howard County GIS data on their websites.

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


An Auditor Office provides oversight for government agencies, including evaluating the performance of government offices and their compliance with laws, rules, and regulations in Howard County, Maryland. Auditors also investigate corruption and fraudulent activities. Auditor Offices maintain a number of records related to their local area, which can include GIS data that shows Howard County property boundaries, city or county lines, flood zones, earthquake zones, and property taxes. These Howard County maps may also provide place names, bodies of water, and other geographic information. Auditors may provide online access to their GIS maps.

Howard County Auditor Columbia MD 8930 Stanford Boulevard 21045 410-313-2716

Howard County Auditor Ellicott City MD 3430 Court House Drive 21043 410-313-2005


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 Howard 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. Howard County GIS data is often accessible through the Clerk Office website.

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


A Building Department creates and enforces building codes and zoning regulations in order to ensure the construction of safe buildings in Howard County, Maryland. As part of that job, Building Departments maintain GIS data that can include Howard 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 Howard 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.

Howard County Planning Department Ellicott City MD 3430 Court House Drive 21043 410-313-2350

Howard County Zoning Ellicott City MD 3430 Court House Drive 21043 410-313-2395


A Recorder of Deeds keeps real estate documents to ensure the accuracy of property and land records in Howard County, Maryland. In addition to filing deeds that provide information on property sales and transfers, Recorders of Deeds also have detailed county and local maps, including Howard County GIS data. These maps can include property lines, building information, unclaimed parcels, property value assessments, and property tax information. They may also show Howard County place names, flood zones, zoning boundaries, neighborhood lines, bodies of water, and other geographic information. The Recorder of Deeds may provide access to GIS data on its website.

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


A Soil and Water Conservation Office provides information on the conservation and management of natural resources in Howard County, Maryland. They are also responsible for developing, implementing, and enforcing policies to protect these natural resources. Howard County Soil and Water Conservation Offices maintain GIS data in the form of maps to monitor soil and water, and these Howard County maps can show ground and surface water, stormwater runoff, irrigation, erosion, flood zones, and sources of pollution. These maps can be important for buying, selling, or improving property, and they may be available through the Soil and Water Conservation Office website.

Howard Soil and Water Conservation Woodbine MD 708 Lisbon Center Drive 21797 410-489-7987