Home Driver's License Colorado
Colorado Driver's License validator
How the Driver's License format works
- Format
- 9 digits (current), or a legacy 1-2 letter + digit form
- Example
- 123456789
Things to watch for
- Format-only check — does not confirm the license actually exists, is valid, or is registered to a real driver
- Colorado has used letter-prefixed license numbers historically; current issuance is 9 all-numeric digits — this checker accepts both
- Runs entirely in your browser — nothing you type is transmitted or stored
^(\d{9}|[A-Z]\d{3,6}|[A-Z]{2}\d{2,5})$A Colorado driver’s license number is, under current issuance, a plain 9-digit numeric string, e.g. 123456789, issued by the Colorado Division of Motor Vehicles. Colorado is one of several states that changed formats over time: older licenses carried a letter prefix — either a single letter or two letters — followed by a shorter digit run, and those legacy numbers are still valid identifiers today even though new licenses no longer use that style.
What this checker verifies
This tool accepts either the current 9-digit numeric form or the legacy letter-prefixed form (1-2 letters plus 2 to 6 digits), so a real Colorado number from either era passes. What it rejects is anything outside those documented shapes, such as an out-of-range digit count or a stray extra letter.
What a pass doesn’t confirm
Neither Colorado format carries a check digit this tool verifies, so a shape match is the limit of what a browser-only check can confirm. It doesn’t prove the number is currently on file with the Division of Motor Vehicles, that the license is valid, or that it belongs to a real driver.
Scope: format-only validation across both eras, entirely client-side.
Content last reviewed 2026-08-09.
Driver's License FAQ
What format does a current Colorado driver's license number use?
Colorado's current issuance is 9 all-numeric digits, e.g. 123456789. The Colorado Division of Motor Vehicles previously used letter-prefixed numbers — either one or two letters followed by digits — which this checker still accepts since older licenses remain in circulation.
Why does this checker accept letter-prefixed Colorado numbers at all?
Colorado has historically issued license numbers with a 1- or 2-letter prefix. Because those older numbers can still appear on file even after the state moved to a purely numeric format, rejecting them outright would flag genuinely valid numbers as errors.
Does a valid format mean the license is currently active?
No. It only confirms the string matches one of Colorado's documented shapes — current or legacy — not that the license is active or belongs to a specific driver.