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Boundary and Annexation Survey (BAS) Response Methods

Digital BAS

Digital BAS is designed to accept submissions from experienced geographic information system (GIS) users. Participants create change polygons utilizing geoprocessing functions available in most GIS software. The Digital BAS must be submitted in a prescribed standard format described in the Digital BAS Respondent Guide [PDF] / Tribal Digital BAS Respondent Guide [PDF].

Participants must download and modify Census Bureau provided shapefiles in their own GIS while using the Digital BAS Respondent Guide [PDF] / Tribal Digital BAS Respondent Guide [PDF] as reference.

Digital BAS FAQs and Tips

Digital BAS Tutorial Videos

Please contact the Census Bureau by phone at (800) 972-5651 or by e-mail at geo.bas@census.gov for more information.



MAF/TIGER Partnership Software (MTPS)

MTPS is a PC-based software application for participants to digitally update Census Bureau maps and forms. Participants do not need to have GIS experience or software in order to respond using the MTPS.

     Note:  Experienced GIS users generally prefer Digital BAS.

Participants may download the MTPS and the accompanying data. For more information, please follow the link to the MTPS download page. Users may also download the MTPS Respondent Guide [PDF].

MAF/TIGER Partnership Software (MTPS) FAQs and Tips

MTPS Tutorial Videos

Please contact the Census Bureau by phone at (800) 972-5651 or by e-mail at geo.bas@census.gov for more information.



Submitting a No Change Response

If your entity does not have any changes to report for the current BAS cycle, you may notify the Census Bureau by responding online or e-mailing geo.bas@census.gov. If you choose to notify the Census Bureau via e-mail, please type "no boundary changes" in the subject heading and provide the following contact information for your Highest Elected Official and, if different, the BAS contact:

  • Name
  • Title
  • Entity Name
  • Mailing Address
  • Phone and Fax number
  • Email Address

[PDF] or PDF denotes a file in Adobe’s Portable Document Format. To view the file, you will need the Adobe® Reader® Off Site available free from Adobe. This symbol Off Site indicates a link to a non-government web site. Our linking to these sites does not constitute an endorsement of any products, services or the information found on them. Once you link to another site you are subject to the policies of the new site.
Source: U.S. Census Bureau | Geography | (301) 763-1128 |  Last Revised: December 15, 2014