County Shape Files
These are county shape files submitted to the census bureau in 2008 and 2009 during the bureau's Voting Tabulation District/Block Boundary Suggestion Project. These are the 2008-09 precinct boundaries that the bureau will have 2010 population numbers for.
These may not exactly match county lines due to spaital differences between the bureau's data and the data from each county. Additionally, some counties change precinct boundaries frequently. These shapefiles are not necessarily current.
Voter districts include each precinct in the county, but also include bodies of water, so may have additional areas. These start with WV.
The first two characters of the precinct code represent a county identifier.
Snohomish's precinct codes were too long, so have been shortened.