Legislative District Assignment & Conversion Files

These files can be used to determine the Assembly, Congressional, Senate, and Board of Equalization district of other geographic entities such as census blocks, census tracts, election precincts or ZIP codes.


2010 Census Blocks by 2011 District files

ZIP codes by 2011 District files

ZIP codes by the new 2011 Assembly, Senate, and Congressional districts. Based on the total number of registered voters' addresses with a given ZIP code that have been geocoded to the district over the total numbers of registered voters with that ZIP code.

2008 General Election SR Precincts by 2011 Districts file

In instances where a precinct was split over districts, the precinct was assigned to the district that had the largest number of occurrences of the srprec.

2011 Assembly, Congressional, & Senate Districts

2010 Census Blocks by 2001 Districts

2000 Census Blocks by 2001 District

2000 Census Tracts by 2001 District

These files were created to be used with the 2000 SF3 population and housing data. Read the documentation for more information on how to use this file.

2000 Census Places by 2001 District

A Census place is a U.S. Census Bureau designation for a city or other city like entity.

2002 General Election Precincts by 2001 District

Zipcodes by 2001 District

Overlay of the assembly, senate, and congressional districts on a layer of zip code points. Please note that this is based on USPS zipcodes circa 2002.

2000 Census Blocks by 1991 District

Read the documentation for this file.

2000 Census Blocks by 2000 Block Groups

Here is a conversion file (block - block group) for 2000 SF3 population and housing data. Read the documentation for this file for a description of how to use it.

2000 Census Block by 2000 Census Place

An assignment file for blocks, block groups, tracts to census places. This assignment file includes place names as well as the place code [the other census place conversion and assignment files contain place codes only].

1990 Census Block by 2000 Census Tracts

If you have data by 1990 census block, this may be the most convenient way to move into 2000 census tracts. Simply match the block field to the block key and aggregate to the tract id given in the conversion file.

1990 Blocks by 2000 Tracts You can also download this conversion file tab-delimited text format.
1990 Census Tract by 2000 Census Tracts

Read the documentation for this file for a description of how to use it.

1990 Tracts by 2000 Tracts You can also download this conversion file in tab-delimited text format.

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