Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Skip to content
6 datasets found

  • Master Address Repository Viewer

    District of Columbia —

    The Master Address Repository (MAR) Viewer is part of the District's location services documented in Addressing in DC. It makes locating addresses or place name as...

  • MAR 2.0 Data Dictionary

    District of Columbia —

    The Master Address Repository (MAR) 2.0 is the successor to the Master Address Repository. The Master Address Repository is a complex and widely accessed database that...

  • MAR Overview Presentation

    District of Columbia —

    The District of Columbia government uses the Master Address Repository (MAR) to implement intelligent search functionality for finding and verifying addresses, place...

  • MAR Address Anomalies

    District of Columbia —

    An address anomaly is an address whose location is illogical. In other words, the address does not follow the normal rules of the District of Columbia’s (DC)...

  • MAR Address Standards

    District of Columbia —

    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...

  • MAR Frequently Asked Questions

    District of Columbia —

    The MAR allows the District Government to more easily compare information across databases and agencies. Learn more about the MAR with these frequently asked questions.
6 datasets found

You can also access this registry using the API (see API Docs).

Didn't find what you're looking for? Suggest a dataset here.