If you are trying to locate your Colorado driver's license number or another person's in that state, this is what you can do. If the search is for your own, you may get this at any Division of Motor Vehicles office, provided that you have a government-issued picture ID with a signature, such as a passport. Colorado also allows you to get access to the driving records of third parties, with one caveat: you must have that third party sign and fill out a release-of-information form, or he must submit a written consent for such a release.
Download and print out a copy of Colorado Division of Motor Vehicles Form DR 2489. This form must be completed for you to have access to driving record information of the third party, including license number. Typically, the Colorado Division of Motor Vehicles limits release of this information to those who have a "permissible use" for such information, and such entities include governmental agencies, employers and insurers. However, if you are not one of these entities and you, nonetheless, get the written consent of the person (third party) whose record you want access to, then such information will be made available to you once the form is adequately completed and submitted. Or you can have the third party fill out and sign the form himself.
Mail the information request to the state motor vehicles department. Enclose the fee, $2.20 as of January 2011, along with the filled-out form and a copy of your picture ID, and mail this information and payment to the Division of Motor Vehicles, Driver Control, 1881 Pierce St., Lakewood, CO 80261. Include a return address to which the information can be mailed.
Present the required information, including the form, fee and ID copy, in person at a state motor vehicles department office. Go to the Division of Motor Vehicles, Driver Control, 1881 Pierce St., Lakewood, CO, if you are in the area, and present the information to the desk clerk. Otherwise, go to the office nearest you.
Provide required information to the state motor vehicles department in person to get a copy of your own driver's license number. You must present a government-issued photo ID with your signature, the filled-out form for a driving abstract and the fee, $2.70 as of January 2011. The DMV accepts the forms and fee by mail, if you provide a return address.