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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Go to all resourcesBoulder: 303-447-8201
Colorado Springs: 719-573-5020
Denver: 303-322-4440
Fort Collins: 970-224-3552
Glenwood Springs: 970-245-9649
Grand Junction: 888-333-9649
Pueblo: 719-546-1173
Phone: 866-768-7709
Phone: 800-784-8669
Phone: 800-426-9143
Phone: 800-985-5990
Phone: 911
Phone: 303-607-7516
Phone: 800-283-3221
Boulder: 303-412-2884
Denver: 303-832-3784
Colorado Springs: 719-637-1580
Mountains West Area: 970-306-6535
Off the Wall: 970-282-8079
Bringing Freedom East: 970-458-5081
Phone: 800-799-7233
Phone: 800-662-4357
Phone: 988
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