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Annexations and 425s

What are 425 Annexations? 

425 Annexations are unique to Michigan and were established by MCL – Act 425 of 1984 (MCL - Act 425 of 1984 - Michigan Legislature). They came about as a streamlined alternative to the legal complexities of regular annexations. Specifically, these are conditional agreements not lasting more than 50 years, do not have the same contiguous boundary requirements as regular annexations, and are more easily entered into between parties to the agreement. Consult the statue for more details.

U. S. Census Boundaries and Annexation Survey (BAS)

The Boundary and Annexation Survey (BAS) is sent our annually to cities, villages, townships, and counties, and tribal authorities providing the opportunity to review the Census Bureau’s legal boundary data and ensure it agrees with what they have. These jurisdictions are asked to confirm or contest their boundaries as shown on Census maps. The survey also requests that jurisdictions confirm what they have listed as current officials and their contact information is correct and update names and status information as required. In the past jurisdictions have been notified through the mailbut the BAS has moved to sending emails to the jurisdictional official designated to receive the survey. For more information about the Boundary and Annexation Survey visit, https://www.census.gov/programs-surveys/bas.html.

Annexations (see above) are the most common way in which city, village and township boundaries change. Each year when the survey comes out, several officials from various jurisdictions notice discrepancies between what the Census has and what they have in their data. When questions arise or errors are noted, who do you turn to?

Questions about/corrections for boundary geometry

DTMB-CSS has a memorandum of understanding (MOU) with the BAS and Tim Lauxmann (Geodata Manager at CSS) is the State Of Michigan point of contact for the survey. That said, the annual survey is sent directly from BAS to the local jurisdictions. We at the state do not see the individual mailing/emails. So, who to ask about what depends on the question.

Boundary Geometry

If your question or concern is about the boundary itself (e.g. an annexation is missing or a boundary is mapped incorrectly), contact DTMB-CSS. Call or send an email to:

Tim Lauxmann, Geodata Manager

lauxmannt@michigan.gov

517-898-5663

Mike Udvare, GIS Analyst

udvarem@michigan.gov

517-241-4280

With your email please include a file geodatabase or shapefile or even a PDF of the area in question with and explanation of what is incorrect along with your contact information. We need this because, as stated, the survey comes directly from BAS and they do not copy us on what they sent you. Once we receive this information, we will research the question and get back to you. If there is a correction required, we will update the state GIS data and that of the Census. You will see the change in the boundary we have at the state in the subsequent boundary release from MGF. The changes to the Census boundaries will be reflected in the next year’s survey.

Note: Contact us with any municipal boundary question or error at any time. Our services are not limited to our MOU with Boundary and Annexation Survey. Corrections made outside the survey will still be reflected in the Census data.

Boundary and Annexation Survey Questions

As stated, the Census sends the Boundary and Annexation Survey directly to the local jurisdictions. This survey does not come from the State Of Michigan. Therefore, the survey itself including updates to the listing of local officials and associated contact information needs to be done using the links provided in the survey. The BAS provides avenues for questions related to survey. As noted above, questions or problems with the boundaries themselves, errors in the geometry, should be directed to the DTMB-CSS contacts listed above. However, within the survey, you will need to let the Census know there is and error. Do not send a boundary correction directly to the Census. If you do, they will simply send it back to CSS for official review. Again, consult the BAS webpage for additional details, Boundary and Annexation Survey (BAS) (census.gov).