[header] How to change address on colorado vehicle registration [title] Identify the county that you live in. [step] It's important that you only visit a dmv office within your county. Since vehicle registration is county-specific, a dmv in another county (even if it's technically nearer to your residence) will be unable to help you. 
This information should be accessible by looking at a map. [substeps] To find your county, you can also use an online map service, such as google maps.