Internal Revenue Services – Find an Office

Click on the website for a list of IRS offices in Colorado and phone numbers for Taxpayer Assistance Centers. All of these offices require you to make an appointment by phone first. Scroll through the list for these numbers and addresses. The website also provides links to information about paying taxes. If you make over a certain amount of money, you legally have to file your taxes.

Website: https://www.irs.gov/help/contact-my-local-office-in-colorado

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