• Boulder County voters will be able to vote on two ballot measures from Boulder County in the November 2025 election.
• Boulder County Ballot Issue 1A extends an existing open space sales and use tax.
• Boulder County Ballot Issue 1B introduces a sales and use tax in support of mental and behavioral health.
• To receive this information in another language, please email commissioners@bouldercounty.gov.

Boulder County, Colo. - Following public hearings and community feedback in August, the Boulder County Commissioners voted to place two county ballot measures — the Open Space Sales and Use Tax Extension and the Mental and Behavioral Health Sales and Use Tax — on the November 2025 Election ballot.

Visit boco.org/ballotmeasures for more information, including links to the Public Hearings and Public Meetings.

Ballot Resolutions

Open Space Sales and Use Tax Extension (Boulder County Ballot Issue 1A)

Resolution 2025-37 Open Space Tax Extension Ballot Title Resolution

A resolution of the Board of County Commissioners of Boulder County approving a ballot title for the November 4, 2025 Election to extend in perpetuity the existing 0.15% countywide Open Space Sales and Use Tax for the purpose of acquiring, improving, managing, and maintaining open space lands and other open space property interests, including agricultural open space.

Resolution 2025-36 Open Space Tax Extension Proposal Resolution

A resolution describing a proposal for extending in perpetuity the 0.15% countywide Open Space Sales and Use Tax for the purposes of acquiring, improving, managing, and maintaining open space lands and other open space property interests, including agricultural open space; and a voter-approved revenue change.

Mental and Behavioral Health Sales and Use Tax (Boulder County Ballot Issue 1B)

Resolution 2025-39 Mental and Behavioral Health Tax Ballot Title Resolution

A resolution of the Board of County Commissioners of Boulder County approving a ballot title for the November 4, 2025 Election to impose for three years an additional sales and use tax of 0.15% for the purposes of addressing unmet needs of youth, adults, families, unhoused individuals, and older adults in Boulder County with or at risk of mental health and substance use disorders by providing mental health crisis services; suicide prevention and intervention; mental health and substance use prevention, treatment, and recovery; treatment services for unhoused individuals; and assistance finding appropriate services through community-based organizations, governmental entities, and other options; and a voter-approved revenue change.

Resolution 2025-38 Mental and Behavioral Health Tax Proposal Resolution

A resolution describing a proposal to impose for three years an additional countywide sales and use tax of 0.15% for the purposes of unmet needs of youth, adults, families, unhoused individuals, and older adults in boulder county with or at risk of mental health and substance use disorders by providing mental health crisis services; suicide prevention and intervention; mental health and substance use prevention, treatment, and recovery; treatment services for unhoused individuals; and assistance finding appropriate services through community-based organizations, governmental entities, and other options; and a voter-approved revenue change.

Proposed Niwot PID

For the resident-proposed Niwot Public Improvement District, petitioners requested a later hearing date, which means the measure did not meet the deadline for inclusion on the November 2025 ballot. Visit boco.org/ballotmeasures for more information.

Visit BoulderCountyVotes.org for more information about voting and the 2025 Election.

• Visit the County Commissioners' webpage
• View the Commissioners' Meeting Documents and Records
• Email the Board of County Commissioners

Americans with Disabilities Act Notice

Special Assistance
Boulder County wants to ensure that everyone has equal access to our programs, activities, and services. To request an Americans with Disability Act (ADA) accommodation, please email the ADA Coordinator, or call 303-441-1386. Submit your request as early as possible, and no later than two business days before the event. Boulder County's ADA Policy