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Boundary and Annexation Survey (BAS) MAF/TIGER Partnership Software (MTPS) FAQs and Tips

What is the username and password for downloading the MAF/TIGER Partnership Software (MTPS)?

If you need a username or password, review your Annual Response Form, contact (800)972-5651 or email

How can I determine the fringe counties that are needed by MTPS?

You can open the setup file (Example: SetupFile_BAS13_10100012345.xml) that was requested from the Census Bureau. Under <County Coverage>, you will see the 5-digit FIPS code of the core county, and the 5-digit codes of all of the fringe counties below that. All of the codes listed in the core and fringe lines must be downloaded before MTPS will function properly.

Why does the FTP site time out when attempting to submit my MTPS changes?

MTPS creates several files that are not needed to process your BAS changes and includes them in your zip folder. These extraneous files greatly increase the data size, which can sometimes prevent a successful submission to the FTP site. You can open up the zip folder created by MTPS (Example: and delete all files not beginning with 'BAS13'. This will reduce the data size of the zip folder and you should have no problem when submitting it to the FTP.

Is there MTPS training available for new users?

MTPS comes with built-in Computer Based Training Tutorials to assist new users in learning how to use the basic functions of MTPS in addition to more detailed instructions relevant to BAS. When opening MTPS, choose 'Run the MAF/TIGER Partnership Software Computer Based Training' as your startup choice. We recommend that you go through the tutorials under Basic Skills and BAS.

In addition to the above tutorials, the Census Bureau also offers BAS Workshops on a limited basis at the beginning of every BAS year. For more information, visit the BAS Workshop page.

When will my changes be reflected?

This depends on the type of changes you submit, when you submit them, and (for boundary corrections) the number of changes in your submission. Any legal boundary changes which are received by the deadline of March 1st and were effective by January 1st of the same year will be reflected in the products from the same year's American Community Survey (generally this data is available in July of the same year). All legal boundary changes received after March 1st but before May 31st will be reflected in the next year's BAS products. Boundary corrections and feature changes will generally all be reflected in the next year's BAS products, but if you submit a very large file with many boundary corrections or features changes, we cannot guarantee that all of them will be reflected. In that case, any remaining boundary corrections and feature changes will be processed as time and resources permit. The Census Bureau appreciates your understanding and support in this matter.

Source: U.S. Census Bureau | Geography | (301) 763-1128 |  Last Revised: October 28, 2013