Tuesday, December 28, 2010

Field Research From December

Alley building in the Capitol Hill Neighborhood

Alley building in the Capitol Hill Neighborhood 2

Rear address: 318 REAR 3RD STREET NE  

A collapsed historic structure in the Capitol Hill Neighborhood

Field Research Printout

Rear Address: 327 REAR L STREET NE (in alley)

Rear Building without / unknown address in Petworth neighborhood

Tuesday, December 21, 2010

DC's Population Reaches 601,723

The US Census Bureau just released the 2010 official population counts.  DC had a count of 601,723 which is an increase of 5.2% from 2000.  This is the first decade of population growth in 6 decades.

Data from the Master Address Repository (MAR) was instrumental in raising DC's population count.   Using the MAR the MAR Data Team was able to add over 17,000 addresses (primary & secondary) to the Census' Master Address File (MAF).  This definitely contributed to a higher population count.  More information can be found in the LUCA Report.

Thursday, December 16, 2010

1/2 Address - In Capitol Hill Neighborhood

613 1/2 Address

Interesting Article About DC Population by Ward & Redistricting

Interesting Article About DC Population by Ward & Redistricting.  The MAR will be an important part of DC's redistricting effort as it will help determine how many housing units are each block.

Tuesday, December 14, 2010

What about addresses located in alleys?

Almost every address which is located in an alley is are already in the MAR. DC GIS has spent a significant amount of time tracking down these addresses. The majority of these addresses have been visited by DC GIS personnel. It is especially important that these addresses are properly in the MAR as they are often difficult to locate. Examples include: Groff Court, Gessford Court, Linden Court.

Wednesday, December 8, 2010

Moving An Address

The address 1455 Church Street NW was in a wrong location as it was in an incorrect building footprint  (blue lines) and incorrect property lot (red lines).   The address was moved to the correct location (see the top image which shows the move (yellow arrow)).    Now the address is located in the correct building footprint and the property lot.  The address was moved less than 10 feet.   Now the address is associated with the correct property lot (Square, Suffix, Lot).

Wednesday, December 1, 2010

***MAR Monthly Report: November 2010***

MAR Data Loads for November 2010

Dataset Numbers (as of December 1st, 2010):

  • Addresses: 142,018
  • Residential Units: 205,711
  • Aliases: 5,749
  • Street Name Aliases: 1,055
  • Intersections: 17,714
  • Blocks: 15,841
  • Address / SSL Cross Reference: 234,897



  • Updated the MAR Address Anomalies Report. Posted on the MAR Website.
  • Updated the MAR Presentation. Posted on theMAR Website.
  • Finished processing primary non matched addresses from US Postal Service. This resulted in dozens of corrections to the MAR.
  • Working on classifying address by residential status.
  • Updated University building names.
  • Worked on resolving the Address Number Suffix vs. Unit issue by converting hundreds of address number suffixes into units.
  • The MAR Blog can be visited at http://dcaddresscoordinates.blogspot.com/ .