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South Dakota . Contact directory

How to reach the South Dakota Secretary of State.

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

Primary phone
605-773-4845
Mon-Fri 8am-5pm CT
Mailing address
500 East Capitol Avenue, Pierre, SD 57501
Physical address
500 East Capitol Avenue, Pierre, SD 57501
Fax
605-773-4550

The right phone for the right question

Franchise tax and corporate income tax
605-773-3311 (SD Department of Revenue)
Expedited filings
No premium expedite; online channel is fastest
605-773-4845

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

"What is my entity's status?"
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"When is my AR due?"
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"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 South Dakota Secretary of State?
The primary phone for the South Dakota Secretary of State, Business Services Division is 605-773-4845. Office hours are Mon-Fri 8am-5pm CT.
What are the South Dakota Secretary of State office hours?
Office hours are Mon-Fri 8am-5pm CT. Online filings can be submitted 24/7.
What is the South Dakota Secretary of State mailing address?
Mailing address: 500 East Capitol Avenue, Pierre, SD 57501. Physical office: 500 East Capitol Avenue, Pierre, SD 57501.
How do I speak to a person at the South Dakota Secretary of State?
Call 605-773-4845 during business hours.
Does the South Dakota Secretary of State offer expedited service?
No premium expedite; online channel is fastest.
Can I email the South Dakota Secretary of State?
Email contact varies by department.
Can I visit the South Dakota Secretary of State office in person?
Yes, the physical office is at 500 East Capitol Avenue, Pierre, SD 57501.

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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 South Dakota Secretary of State, Business Services Division or any Secretary of State office. You may file directly with the South Dakota Secretary of State, Business Services Division. Information on this page is for general guidance only and is not legal, tax, or accounting advice. Fees and deadlines verified against the South Dakota Secretary of State, Business Services Division as of June 2026 and may change. For entity-specific guidance, consult a licensed South Dakota 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.