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Colorado . Contact directory

How to reach the Colorado Secretary of State.

Direct phone number, hours, mailing and physical addresses, and the right phone for the right question. Plus the related Colorado departments most business owners need.

Primary phone
303-894-2200
Mon-Fri 8am-5pm MT
Mailing address
1700 Broadway, Suite 550, Denver, CO 80290
Physical address
1700 Broadway, Suite 550, Denver, CO 80290
Fax
303-869-4864

The right phone for the right question

Franchise tax and corporate income tax
303-238-7378 (CO Department of Revenue, Corporate Income Tax)
Expedited filings
No premium expedite; online channel is fastest
303-894-2200 (online channel is fastest; no separate expedite line)

Most calls to the Colorado SoS are about things File.Business can answer instantly

"What is my entity's status?"
Run a search →
"When is my AR due?"
See AR rules →
"How do I change RA?"
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"Can I reinstate?"
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FAQ

Frequently asked questions

What is the phone number for the Colorado Secretary of State?
The primary phone for the Colorado Secretary of State, Business Division is 303-894-2200. Office hours are Mon-Fri 8am-5pm MT.
What are the Colorado Secretary of State office hours?
Office hours are Mon-Fri 8am-5pm MT. Online filings can be submitted 24/7.
What is the Colorado Secretary of State mailing address?
Mailing address: 1700 Broadway, Suite 550, Denver, CO 80290. Physical office: 1700 Broadway, Suite 550, Denver, CO 80290.
How do I speak to a person at the Colorado Secretary of State?
Call 303-894-2200 during business hours.
Does the Colorado Secretary of State offer expedited service?
No premium expedite; online channel is fastest.
Can I email the Colorado Secretary of State?
Email contact varies by department.
Can I visit the Colorado Secretary of State office in person?
Yes, the physical office is at 1700 Broadway, Suite 550, Denver, CO 80290.

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Disclosure. File.Business is a private business filing and compliance service. We are not a government agency and are not affiliated with the Colorado Secretary of State, Business Division or any Secretary of State office. You may file directly with the Colorado Secretary of State, Business Division. Information on this page is for general guidance only and is not legal, tax, or accounting advice. Fees and deadlines verified against the Colorado Secretary of State, Business Division as of June 2026 and may change. For entity-specific guidance, consult a licensed Colorado attorney or CPA.

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File.Business is a private business filing and compliance service. We are not a government agency and are not affiliated with any Secretary of State office. You may file directly with the appropriate state agency. SOC 2 Type II audited. 220,000+ businesses formed since 2017.