2026 Boundary and Annexation Survey (BAS) Webinar

U.S. Census Bureau · March 5, 2026

A prerecorded U.S. Census Bureau webinar explains the Boundary and Annexation Survey (BAS), who should participate, submission methods (BAS Partnership Toolbox, GUPS Web, paper maps), and technical demos including SWIM uploads and ArcGIS/GUPS workflows; it reiterates the Jan. 1 effective-date rule and the March 1 submission deadline for data to feed population and federal funding counts.

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