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This is a Non-Federal dataset covered by different Terms of Use than Data.gov.

Zip Codes - 5 Digit

Metadata Updated: October 11, 2025

This dataset is the Maryland ZIP codes based on the most current MD PropertyView data. In 1993, the Maryland Department of Planning and the Maryland State Highway Administration entered into a Data Base Usage Agreement with Bell Atlantic and Data Chromatics, Inc. to develop an enhanced street address map for Maryland. Zip Code boundary area files were one of the products derived from this partnership. The resulting boundary area files were intended to improve the cartographic quality and accuracy of the zip code boundary area files derived from the U.S. Census Bureau's post 1990 Census TIGER\Line Files (based on the Census Bureau's zip code tabulation areas, ZCTAs). Subsequent iterative improvements to the Zip Code boundary area files have been made using premise address information associated with mapped parcel records as provided in the Maryland Department of Planning's MdProperty View GIS product. The resulting files are meant to serve as a "good approximation" of zip codes as polygons (which in reality they are not) but are not official Zip Code maps and are not meant to be a substitute for any products offered by the U.S. Postal Service, the official source for zip code information. While there are no restrictions on their use we do recommend that they are best used with MdProperty View and that MDP makes no guarantee or warranty regarding the files. For information on the date of the data to each jurisdiction's corresponding MdProperty View edition, see the production schedule located here: https://planning.maryland.gov/Documents/OurProducts/PropertyMapProducts/Sched.pdf.

Access & Use Information

Public: This dataset is intended for public access and use. Non-Federal: This dataset is covered by different Terms of Use than Data.gov. License: No license information was provided.

Downloads & Resources

Dates

Metadata Created Date July 26, 2025
Metadata Updated Date October 11, 2025

Metadata Source

Harvested from md json

Additional Metadata

Resource Type Dataset
Metadata Created Date July 26, 2025
Metadata Updated Date October 11, 2025
Publisher opendata.maryland.gov
Maintainer
Identifier https://opendata.maryland.gov/api/views/6pfn-7c2t
Data First Published 2025-07-22
Data Last Modified 2025-10-06
Public Access Level public
Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
Metadata Catalog ID https://opendata.maryland.gov/data.json
Schema Version https://project-open-data.cio.gov/v1.1/schema
Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
Harvest Object Id 4c7eee9b-009f-4465-a19f-b43bb1b53876
Harvest Source Id ee165ef5-7b35-41a7-b3a5-5479c71b0e58
Harvest Source Title md json
Homepage URL https://opendata.maryland.gov/d/6pfn-7c2t
Source Datajson Identifier True
Source Hash 7d28f6125aa6d25b3a9d6d5f4ceaf10c48aebaf89e6ebf850534858e01e404c8
Source Schema Version 1.1

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