This is Boulder County, Colorado
Boulder County is home to more than 300,000 residents and includes some of the most diverse, natural landscapes and sustainable development along the Northern Front Range of Colorado.
From visionary open space, land use and sustainability policies to forward-thinking and compassionate human services programs, our county government helps foster a vibrant, healthy and active community.
The county seat is the City of Boulder. Other incorporated towns and cities include: Erie, Jamestown, Lafayette, Longmont, Louisville, Lyons, Nederland, Superior, and Ward.
Boulder County is home to more than 300,000 residents and includes some of the most diverse, natural landscapes and sustainable development along the Northern Front Range of Colorado.
From visionary open space, land use and sustainability policies to forward-thinking and compassionate human services programs, our county government helps foster a vibrant, healthy and active community.
The county seat is the City of Boulder. Other incorporated towns and cities include: Erie, Jamestown, Lafayette, Longmont, Louisville, Lyons, Nederland, Superior, and Ward.
![Boulder County and the City of Boulder Complete First Phase of Boulder Valley Comprehensive Plan Update, A Boulder Today](https://assets.bouldercounty.gov/wp-content/uploads/2025/01/cpp-bvcp-update-featured-image-420x280-1.png)
Boulder County and the City of Boulder Complete First Phase of Boulder Valley Comprehensive Plan Update, A Boulder Today
![Public Health Confirms No Ongoing Hepatitis A Risk to the Public at the Rio Grande Restaurant in Boulder](https://assets.bouldercounty.gov/wp-content/uploads/2025/01/website-hepA-eng-2.jpg)
Public Health Confirms No Ongoing Hepatitis A Risk to the Public at the Rio Grande Restaurant in Boulder
![Correction: Public Health Warns of Potential Hepatitis A Exposure at Boulder Restaurant](https://assets.bouldercounty.gov/wp-content/uploads/2025/01/website-hepA-eng.jpg)
Correction: Public Health Warns of Potential Hepatitis A Exposure at Boulder Restaurant
![Priorities for New State Legislation and State Funding in 2025](https://assets.bouldercounty.gov/wp-content/uploads/2025/01/Untitled-design-2.png)
Priorities for New State Legislation and State Funding in 2025
![A Commitment to Boulder County’s Values](https://assets.bouldercounty.gov/wp-content/uploads/2024/12/Untitled-420-x-280-px.png)
A Commitment to Boulder County’s Values
![$2.1 Million Awarded in the Fall 2024 Cycle of the Strategic Fuels Mitigation Grant (SFMG) Program](https://assets.bouldercounty.gov/wp-content/uploads/2024/12/cpp-featured-sfmg-mitigation-grant-goats-grazing-plains-grassland.jpg)