Check Reissuance

Unclaimed Property

Each year, Boulder County notifies potential owners of unclaimed property about any uncashed checks still in the county’s possession. Notice recipients may request to have an unclaimed check reissued after verification of ownership.

Note: Boulder County does not maintain a searchable list of unclaimed property records. A Notice of Unclaimed Property is your confirmation that an uncashed check is eligible for reissuance.

2025 Notices

Owners who have received a Notice of Unclaimed Property must complete the following steps before Oct. 1, 2025.

If your notice shows a Payroll stamp, skip to the Payroll notice instructions.

My notice is stamped with “Accounts Payable”

1. Complete an Affidavit of Lost Warrant (Check) form. You must complete 1 form per unclaimed check you wish to receive.
2. Return your completed form(s) to Boulder County:
   • By email, to our Accounts Payable team at financeAP@bouldercounty.gov.
   • OR
   • By physical mail (your envelope must be postmarked on or before Oct. 1, 2025) at the following address:
     Boulder County – Unclaimed Property
     ATTN: OFM Accounts Payable
     P.O. Box 471
     Boulder, CO 80306-0471

My notice is stamped with “Payroll”

1. Complete an Affidavit of Lost Warrant (Check) form. You must complete 1 form per unclaimed check you wish to receive.
2. Return your completed form(s) to Boulder County:
   • By email, to our Payroll team at askpayroll@bouldercounty.gov.
   • OR
   • By physical mail (your envelope must be postmarked on or before Oct. 1, 2025) at the following address:
     Boulder County
     ATTN: PAYROLL Unclaimed Property
     P.O. Box 471
     Boulder, CO 80306-0471

What can I expect?

Our staff will contact you to confirm receipt of your claim form(s) and notify you of next steps in the process.

After Oct. 1, 2025

If you are unable to reach out to us by the deadline, Boulder County will turn over any unclaimed property to the State of Colorado for their custody and administration.

After this date, you will need to submit any claims directly with the State as the new Administrator of the funds.

Find more information on State of Colorado-administrated unclaimed property through the Colorado Unclaimed Property website, a part of the Great Colorado Payback Program.

Last updated Aug. 27, 2025