The purpose of the 2010 Census Address List Update Program for Service-Based Enumeration, Group Homes, and Carnival Locations Assessment Report is to document the results that the program contributed to the enumeration frame development across the United States and Puerto Rico. This report describes issues encountered while implementing the program and how they were resolved. It also provides lessons learned and recommendations to be used for historical purposes as well as planning for future census frame development programs.

The 2010 Census Address List Update Program for Service-Based Enumeration, Group Homes, and Carnival Locations supported the 2010 Census enumeration frame development effort. The program was implemented to ensure that the 2010 Census enumeration frame was most complete and to improve the Census Bureau’s effort of providing an opportunity to enumerate people experiencing homelessness, as well as those living in group homes and carnival locations. This program was a component of the broader 2010 Administrative Records Updating Operation, under the 2010 Census Geographic Programs Operational Integration Team. The design of the program ensured that the 2010 Census enumeration frame was updated by using specialized procedures to update the addresses for the following types of locations:

• Service-based locations (shelters, soup kitchens, and regularly scheduled mobile food vans),
• Targeted Non-Sheltered outdoor locations,
• Group homes,
• Carnival, circus, and fair locations.

The 2010 Census Address List Update Program supported the 2010 Census enumeration frame development for the following operations:

• The 2010 Census Group Quarters Enumeration Operation,
• The 2010 Census Service-Based Enumeration Operation, and
• The 2010 Census Enumeration at Transitory Locations Operation.

The 2010 Census Address List Update Program obtained addresses and location description information from the following sources:

• Internet research was conducted to identify shelters, soup kitchens, regularly scheduled mobile food vans, and group homes.
• Highest Elected Officials at tribal, state, and local governments and members of National and State Advocacy Organizations were solicited to identify shelters, soup kitchens, regularly scheduled mobile food vans, and targeted non-sheltered outdoor locations.
• Carnival management companies were contacted to identify carnival, circus, and fair site locations.

The 2010 Census Address List Update Program was conducted over three phases:

• Phase One – Internet Research,
• Phase Two – Mail Solicitation, and
• Phase Three – Carnival Telephone Solicitation.