Voter Registration Statistics

Boulder County Voter Registration Statistics

Data as of September 10, 2014

Party Active Inactive Total
American Constitution 203 95 298
Democratic 77,119 23,445 100,564
Green 1020 511 1,531
Libertarian 1,825 750 2,575
Republican 35,119 11,010 46,129
Unaffiliated 69,534 29,519 99,053
Total 184,821 65,330 250,151

Active Status

Active voters automatically receive a mail ballot in each election. They meet one of the following criteria:

  • Voted in the last general election
  • Registered to vote since the last general election
  • Updated registration information since the last general election

Inactive Status

These voters do not automatically receive a mail ballot in each election. They are still eligible to vote by visiting a Voter Service and Polling Center during election time, or they can contact the Elections Division to find out more information about how to reactivate their record. Categories include:

  • Undeliverable Ballot or Returned Mail: Voters who no longer reside at the address provided on their voter registration file. Official election correspondence and/or ballot has been returned to the clerk's office as "undeliverable" by the post office because the resident no longer lives at the address.
  • NCOA (National Change of Address database): Voters who have provided the U.S. Postal Service with new residence addresses that indicate they have moved out of the state of Colorado.
  • Conversion: These voters have missed at least one general election prior to the 2008 implementation of the statewide voter registration system and have had no contact with our office since that time.


Elections Division

303-413-7728 (fax)
Hours: 8 a.m.-4:30 p.m. M-F


Boulder: 1750 33rd Street
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Longmont: 529 Coffman Street
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Lafayette: 1376 Miners Drive
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Mailing Address

1750 33rd Street, Suite 200
Boulder, CO 80301