William Francis Galvin, 2020 Census Liaison
William Francis Galvin, 2020 Census Liaison

2020 Census Redistricting Data Program

The 2020 Census Redistricting Data Program provides states the opportunity to specify the small geographic areas for which they wish to receive 2020 decennial population totals for the purpose of reapportionment and redistricting.

The 2020 Census Redistricting Data Program includes 5 phases:

Phase 1 - Block Boundary Suggestion Project

Phase 2 - Voting District Project

Phase 3 - Delivery of the 2020 Census P.L. 94-171 Redistricting Data Files and Geographic Products

Phase 4 - Collection of Post-2020 Census Redistricting Plans

Phase 5 - Evaluation of the 2020 Census Redistricting Data Program and Recommendations for 2030

Phase 1 - Block Boundary Suggestion Project

Phase 1 of the 2020 Census Redistricting Data Program is the Block Boundary Suggestion Project (BBSP), which provides state liaisons the opportunity to submit suggestions for the 2020 Census tabulation block inventory. Phase 1 is conducted in two parts, an initial identification of the updates needed, and a verification stage to ensure the suggested updates were accurately applied. 

The Census Bureau periodically adds new features and modifies their existing block boundary lines based on geography corrections and changes to landmarks and boundary lines that may no longer meet the block boundary line requirements. BBSP allows states the opportunity to review these additions and modifications, as well as suggest new block boundary lines  in areas of growth or in areas that limited the creation of voting precinct and legislative district shapes in the past.

The Secretary's Office is working with city and town liaison's to preserve block lines as needed and help to reduce block lines where not necessary (such as such as water blocks or traffic medians). As part of this process, we have  requested local assistance with the review of all block lines, and subsequent identification of block boundary lines that must remain, including challenging any lines that the U. S. Census Bureau intends to eliminate. In addition, Phase 1 offers the opportunity to suggest new legal boundary updates as well as updates to other geographic areas.