Checked
State dataMaps & Geospatial
Tax Maps
Published by Maryland Department of Planning · Updated 07/22/2025 · As needed
- Last updated
- 07/22/2025
- First published 07/22/2025
- Update frequency
- As needed
- Formats
- 4
- CSV, JSON, GeoJSON
- Coverage
- Maryland
- Statewide
About this dataset
Tax Maps and other affiliated layers.
The comprehensive point theme incorporates parcel ownership and address information, parcel valuation information and basic information about the land and structure(s) associated with a given tax assessment account. Data for the Parcel point theme are obtained from the State Department of Assessments and Taxation with added data from Maryland Department of Planning. The date the point was most recently published in Planning's data products MdProperty View and FINDER Quantum is contained in the mdpvdate field. The date of the most recent Assessments data linkage to MdProperty View/FINDER Quantum points is contained in the sdatdate field. Accounts deleted between those two dates are no longer represented as points. For more information on the attribute definitions, please see the MdProperty View User's Guide, available for download at https://planning.maryland.gov/Pages/OurProducts/DownloadFiles.aspx. Tax maps, also known as assessments, property or parcel maps, are a graphic representation of real property showing and defining individual property boundaries in relationship to contiguous real property. The primary purpose of these maps is to help State tax assessors locate properties for assessments and taxation purposes. The maps contained herein are NOT to be construed or used as a "legal description". It is not a survey product and not to be used for the design, modification or construction of improvements to real property or for flood plain determination. Planning does not provide any guarantee of accuracy or completeness regarding the map information. Any errors or omissions should be reported to the Maryland Department of Planning Property Mapping Unit. In no event will Planning or the State of Maryland be liable for any damages, including but not limited to loss of data, lost profits, business interruption, loss of business information or any other pecuniary loss that might arise from the use of this map or information it contains.
This is a MD iMAP hosted service layer. Find more information at https://imap.maryland.gov
Files and access
Links open the official government source
- CSV downloadopendata.maryland.govCSV
- JSON (SODA API)opendata.maryland.govJSON
- GeoJSONopendata.maryland.govGeoJSON
- XMLopendata.maryland.govXML
API endpoint: https://opendata.maryland.gov/resource/834w-shfy.json
Links open outside websites we do not control.
Frequently asked questions
- Who publishes Tax Maps?
- Maryland Department of Planning, part of State of Maryland, publishes this dataset on Maryland Open Data.
- How often is it updated?
- The publisher lists the update frequency as as needed. The last update was on 07/22/2025.
- How do I download it?
- It is available as CSV, JSON, GeoJSON, XML. Use the links in Files and access, which open the official government source.
Similar data from other publishers
- MapsLibrary of Congresshttp://www.loc.gov/cds/products/MDSConnect-maps.htmlXMLUpdated 10/25/2016
- Tax Map GridState of Virginia · Fairfax CountyThe Fairfax County tax map grid divides the county into approximately 444 tiles. This is the basis for the parcel numbering system in Fairfax County.CSVZIPGeoJSONKML+5Updated 10/08/2026
- Tax Map GridState of Virginia · WinchesterThis data shows the tax map grid that covers the City of Winchester, Virginia.CSVZIPGeoJSONKML+1Updated 10/05/2026
- Apps and MapsDistrict of Columbia · City of Washington, DCThe District of Columbia offers several custom online mapping applications. Some of these are built for DC agency specific goals and business processes while others are focused on serving DC residents and the public in general.Updated 12/22/2025
- FeedVA mapsState of Virginia · OtherFrom FeedVA, ArcGIS maps using data to explore "trends in hunger, food access, and health." --- ### 🔗 Related Datasets - [Federation of VA Food Banks - Link2Feed Agencies](https://odgavaprod.ogopendata.com//dataset/5f5d7e53-f755-49b4-9c98-6652889c5735) - *OtheUpdated 03/24/2026
Where this catalog comes from
- Data.gov CatalogU.S. General Services Administration
- State and local open data portalsSocrata Discovery API
- State and city CKAN portalsCalifornia, Virginia, Boston, Houston and more
- Government ArcGIS Hub sitesCity and county GIS data
Catalog checked 10/24/2026
We list dataset descriptions only. Downloads and APIs link straight to the official government source, which holds the current version and its terms of use.
Source: Maryland Open Data and Data.gov · Last updated 10/24/2026 · Listing only; the data stays with the publisher
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