Some Boulder County services returned in-person on a limited basis beginning June 1. Most services are still being offered virtually.

Resources are available for those impacted by COVID-19. For help, submit questions or call 720-776-0822 weekdays (9 a.m.-5 p.m.).

Fire Restrictions were updated on June 2 and remain in effect for western Boulder County. View the flyer and map for more details.

Data Download

Assessor's Property Data Download

The Boulder County Assessor’s office makes the following public data available for download. The datasets are refreshed at 4 a.m. daily. Detailed information about the tables and fields can be found in the Property Data Download Help Manual. The GIS Parcel Boundaries are also available for download.

The Datasets

Table File Size
Account & Parcel Numbers CSV (46 MB)
Owners & Addresses CSV (46 MB)
Buildings CSV (51 MB)
Land CSV (13 MB)
Permits CSV (7 MB)
All Sales CSV (46 MB)
Tax Areas CSV (7 KB)
Tax Authorities CSV (7 KB)
Property Values CSV (11 MB)
Business Personal Property CSV (2 MB)

General Disclaimer

The data which is provided here has been developed solely for internal use only by Boulder County, and the county makes no warranties, representations or guarantees, either expressed or implied, as to the completeness, accuracy or correctness of the data, nor accepts or assumes any liability arising from or for any incorrect, incomplete or misleading data provided. There are no warranties and/or representations, either expressed or implied, of merchantability or fitness of the data for a particular purpose or use.

Boulder County is not responsible for incidental, consequential, or special damages arising from the use of the data provided. The data shall be used and relied upon only at the risk of user.

Contact Us

Due to COVID-19, all Assessors Office sites are closed for business until Sunday, May 31. Please call or email us with your questions during our normal business hours.

Assessor
Phone: 303-441-3530
Fax: 303-441-4996

Business Personal Property
Phone: 303-441-3316
Fax: 303-441-1783

Email

Schedule a meeting

Mailing Address
Main: PO Box 471
Boulder, CO 80306-0471

Locations
Boulder
1325 Pearl St., 2nd floor
Boulder, CO 80302
Map & Directions
Hours: 8 a.m.-4:30 p.m. M-F

Longmont
515 Coffman Street, Suite 114
Map & Directions

Lafayette
1376 Miners Dr., Unit 105
Map & Directions