Precinct and District Maps
In 2017, because of growing population, precinct 411 in Erie was split into two precincts, creating a new precinct: precinct 413. Any map that included Erie was updated to reflect this change. The City of Longmont precincts map was also updated in 2017 to reflect updated city borders. All other maps were last updated in 2013.
- Boulder County Precincts
- Individual Boulder County Precincts Full Set
- U.S. Congressional Districts in Boulder County
- State Senate Districts in Boulder County (all)
- State House Districts in Boulder County (all)
- Boulder County Commissioner Districts
Election Results and Turnout Maps
Looking for election results or voter turnout maps? If available, these maps are linked by year from the past elections results & information section.