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Resource Library
BAS Reference Files
BAS Reference Files
The reference files listed below include the information collected during past Boundary and Annexation Survey (BAS) cycles. Select “Legal Boundary Change/Annexation Data” to view data tables by state featuring legal boundary changes that were reported each BAS year.
Select “New Incorporations, Mergers, Consolidations, and Disincorporations” to view data tables featuring governments that have been established, merged/consolidated, or ceased to exist in the past decade.
New Incorporations, Mergers, Consolidations, and Disincorporations
View a list of the governments that have been established, merged/consolidated, or ceased to exist since 2010.
Legal Boundary Change/Annexation Data
Review the annexations and legal boundary changes that have been reported to the BAS.
Page Last Revised - December 14, 2023
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