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

    MAR Address Standards

    Metadata Updated: October 8, 2025

    This Address Standards document has been developed to describe the addressing standards used for the Master Address Repository (MAR). The MAR is DC Government’s official address database and is widely used across the City of Washington, DC. The OCTO Data Team which is part of the Office of the Chief Technology Officer (OCTO), is responsible for maintaining the MAR.

    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: Creative Commons Attribution

    Downloads & Resources

    Dates

    Metadata Created Date April 30, 2024
    Metadata Updated Date October 8, 2025

    Metadata Source

    Harvested from DC data

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date April 30, 2024
    Metadata Updated Date October 8, 2025
    Publisher City of Washington, DC
    Maintainer
    Identifier https://www.arcgis.com/home/item.html?id=463a635fc6ea4288b9be4126323365d0
    Data First Published 2021-04-09T19:05:56.000Z
    Data Last Modified 2025-07-15T18:34:45.000Z
    Category geospatial
    Public Access Level public
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    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 3e7c722b-ff4b-43ef-92ef-4e6af8349833
    Harvest Source Id b05f955a-65d6-4288-9558-15a5ebc74e36
    Harvest Source Title DC data
    Homepage URL https://opendata.dc.gov/documents/DCGIS::mar-address-standards
    License https://creativecommons.org/licenses/by/4.0
    Metadata Type geospatial
    Old Spatial -77.2258,38.7867,-76.8125,39.0009
    Source Datajson Identifier True
    Source Hash bcc0583836acc1f55a2a47b864f03f4e6d233c7345544a99687b3776263cc166
    Source Schema Version 1.1
    Spatial {"type": "Polygon", "coordinates": -77.2258, 38.7867, -77.2258, 39.0009, -76.8125, 39.0009, -76.8125, 38.7867, -77.2258, 38.7867}

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