2010 Census Block Relationship Files

The 2010 Census Block Relationship files are provided as a tool to help data users compare the universe of Census 2000 blocks to the universe of 2010 Census blocks.  From these files, data users may determine how 2000 blocks now relate to 2010 Census blocks and vice versa.  Please use the links below to find out more information about the 2010 Census Block Relationship files and to download them.

Overview of the 2010 Census Block Relationship Files

Understanding the 2010 Census Block Relationship Files [PDF]

2010 Census Block Relationship File Format

2010 Census Block Relationship File Record Layout

Download the 2010 Census Block Relationship Files

Contact Information

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