Change Mailing Address

Change Your Mailing Address

We’ve Changed How We Process Address Changes

We’ve worked with the Assessor and their partner, Just Appraised, to improve the way we process address changes. To enter an address change, you’ll need to register for an account, if you don’t already have one, and then log in, after confirming the e-mail address you entered during registration. Once you’ve logged in, look for the form called “Change of Address” and follow the instructions for completing it. Your change of address will be sent to both the Assessor and Treasurer.

Access the change of address form on Boulder County’s Just Appraised page.

Contact Us

Treasurer's Office

Phone: 303-441-3520
Fax: 303-441-3598

Mailing Address

PO Box 471
Boulder, CO 80306


1325 Pearl St.
1st Floor
Map and Directions Boulder Location
Hours: 8 a.m. to 4:30 p.m.
Monday - Friday

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515 Coffman St.
Suite 113
Map and Directions Longmont Location
Hours: 8 a.m. to 4:30 p.m.
Mondays only


1755 S. Public Road
Map and Directions Lafayette Location
Hours: 8 a.m. to 4:30 p.m.
Tuesdays Only
Open through Aug 27, 2024