Registered Agent by ZIP

Registered Agent by ZIP › Idaho

Registered agent in Idaho (2026)

Idaho ZIP codes begin with 831-838. Required: every LLC needs an agent with an in-state street address Mainstay Filing, our best overall pick, serves Idaho at $149 a year; the state fee to change agents is nothing.

  • Idaho rules checked October 20, 2026

Idaho agent requirements

Requirement
Required. An Idaho resident, or a business entity authorized to do business in Idaho. An assumed business name (DBA) cannot serve.
Agent address
The address has to be a physical street address in Idaho. P.O. boxes and commercial mailboxes are not accepted.
ZIP code prefixes
831-838 (831, 834 shared with a neighboring state)
Change-of-agent fee
None
Statute
Idaho Code § 30-21-404
Filing office
Idaho Secretary of State
Best overall in Idaho

Mainstay Filing

Our rating: 4.9 out of 5

$149 / year, same at renewal

  • Registered agent address in Idaho
  • Mail and legal-document scanning and forwarding
  • Compliance reminders

Checked October 20, 2026.

Providers with a published Idaho price

ProviderYear 1Renewal
Mainstay Filing$149$149
ResidentAgents.com$129$129
Northwest Registered Agent$125$125
Bizee$149$149
Harbor Compliance$99$159
ZenBusiness$99$199
LegalZoom$249$249

Questions

Who can be a registered agent in Idaho?

An Idaho resident, or a business entity authorized to do business in Idaho. An assumed business name (DBA) cannot serve.

What address must a Idaho registered agent have?

The address has to be a physical street address in Idaho. P.O. boxes and commercial mailboxes are not accepted.

What does it cost to change registered agents in Idaho?

The state charges no fee to file the change (Idaho Code § 30-21-404).

Which ZIP codes are in Idaho?

Idaho ZIP codes begin with 831-838. The prefixes 831, 834 also serve addresses in a neighboring state. The ZIP code tells you the state; the agent rules above apply in all of them.

Sources