Voter Registration Statistics

Boulder County Voter Registration Statistics

Data as of July 10, 2014

Party Active Inactive Total
American Constitution 205 96 301
Democratic 75,437 24,837 100,274
Green 975 513 1,488
Libertarian 1,728 757 2,485
Republican 34,763 11,591 46,354
Unaffiliated 67,365 29,844 97,209
Total 180,473 67,638 248,111

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