MAR Overview Presentation

The District of Columbia government uses the Master Address Repository (MAR) to implement intelligent search functionality for finding and verifying addresses, place names, blocks and intersections. It provides complete standardization of addressing components so that agency applications and systems maintain clean integration. Most often the MAR is solely known for its address points. But did you know it is also a web data service, a standalone app, a toolbar and website? Did you know uses of the MAR go beyond DC government and are available for public use in your applications? Take a look at what we've done with it and then make it your own.

Data and Resources

Field Value
accessLevel public
catalog_@context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
catalog_describedBy https://project-open-data.cio.gov/v1.1/schema/catalog.json
identifier https://www.arcgis.com/home/item.html?id=ef8f84ebee7d4934842417b78b5cf81f
issued 2021-04-09T18:54:34.000Z
landingPage https://opendata.dc.gov/documents/DCGIS::mar-overview-presentation
license https://creativecommons.org/licenses/by/4.0
metadata_type geospatial
modified 2024-06-10T16:08:38.000Z
old-spatial -77.2258,38.7867,-76.8125,39.0009
publisher City of Washington, DC
resource-type Dataset
source_datajson_identifier true
source_hash 4dcc63f765aea225ba8e887d2e7ef21c3605914f611004aa1338b504feb5baa0
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]]]}
theme {geospatial}
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • AmeriGEO
  • AmeriGEOSS
  • CKAN
  • GEO
  • GEOSS
  • National
  • North America
  • United States
  • addressing
  • block
  • dc
  • district-of-columbia
  • intersection
  • mardata
  • master-address-repository
  • washington-dc
isopen True
license_id cc-by
license_title Creative Commons Attribution
license_url http://www.opendefinition.org/licenses/cc-by
maintainer DCGISopendata
maintainer_email gisgroup@dc.gov
metadata_created 2025-09-23T21:07:54.845159
metadata_modified 2025-09-23T21:07:54.845165
notes The District of Columbia government uses the Master Address Repository (MAR) to implement intelligent search functionality for finding and verifying addresses, place names, blocks and intersections. It provides complete standardization of addressing components so that agency applications and systems maintain clean integration. Most often the MAR is solely known for its address points. But did you know it is also a web data service, a standalone app, a toolbar and website? Did you know uses of the MAR go beyond DC government and are available for public use in your applications? Take a look at what we've done with it and then make it your own.
num_resources 1
num_tags 16
title MAR Overview Presentation