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Voter Service Centers, Ballot Drop-Off
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Voter Service & Polling Centers, Ballot Drop-Off Locations

During every election, Boulder County operates Voter Service and Polling Centers and mail ballot drop-off locations, including 24-hour drop-box locations.

Voter Service & Polling Centers

Visit a Voter Service and Polling Center by 7 p.m. Election Day to:

  • Drop off your ballot
  • Cast a ballot in person
  • Request a replacement ballot
  • Register to vote or update your registration information
  • Vote using equipment and facilities for persons with disabilities

A complete list of all Voter Service Center locations will be added closer to the 2018 Primary and General Election.

24hr Ballot BoxMail Ballot Drop-off Locations

Every election, Boulder County provides between 10-12 locations with secure, 24-hour mail ballot drop boxes. Additionally, from Friday before the election through Election Day, the county operates additional drive-by ballot drop-off locations staffed by election judges. Voters can also drop-off ballots at any Voter Service Center location.

A complete list of all ballot drop-off locations will be added closer to the 2018 Primary and General Election.

Contact Us

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