Registered Agent by ZIP › Missouri
Registered agent in Missouri (2026)
Missouri ZIP codes begin with 630-631, 633-641, 644-648, 650-658. Required: every LLC needs an agent with an in-state street address Mainstay Filing, our best overall pick, serves Missouri at $149 a year; the state fee to change agents is $10.
- Missouri rules checked October 20, 2026
Missouri agent requirements
- Requirement
- Required. A Missouri resident, or a corporation authorized in Missouri, whose business office is the registered office.
- Agent address
- The address has to be a physical street address in Missouri. A P.O. box can be listed only together with a street address.
- ZIP code prefixes
- 630-631, 633-641, 644-648, 650-658
- Change-of-agent fee
- $10
- Statute
- RSMo 347.030
- Filing office
- Missouri Secretary of State
Mainstay Filing
$149 / year, same at renewal
- Registered agent address in Missouri
- Mail and legal-document scanning and forwarding
- Compliance reminders
Checked October 20, 2026.
Providers with a published Missouri price
| Provider | Year 1 | Renewal |
|---|---|---|
| Mainstay Filing | $149 | $149 |
| FreeRegisteredAgent.com | $0 | $129 |
| Harbor Compliance | $99 | $159 |
| Northwest Registered Agent | $125 | $125 |
| InCorp Services | $129 | $129 |
| Registered Agents Inc | $200 | $200 |
| LegalZoom | $249 | $249 |
| ZenBusiness | $99 | $199 |
| Bizee | $149 | $149 |
Questions
Who can be a registered agent in Missouri?
A Missouri resident, or a corporation authorized in Missouri, whose business office is the registered office.
What address must a Missouri registered agent have?
The address has to be a physical street address in Missouri. A P.O. box can be listed only together with a street address.
What does it cost to change registered agents in Missouri?
The state charges $10 to file the change (RSMo 347.030).
Which ZIP codes are in Missouri?
Missouri ZIP codes begin with 630-631, 633-641, 644-648, 650-658. The ZIP code tells you the state; the agent rules above apply in all of them.
Sources
- Missouri registered agent statute (RSMo 347.030): revisor.mo.gov/main/OneSection.aspx?section=347.030, checked October 20, 2026
- Missouri Secretary of State: www.sos.mo.gov/, checked October 20, 2026
- Provider registered agent pages (prices), checked October 20, 2026