📍 MONTANA
Great Falls Main Post Office
Post Office (USPS) · Great Falls
The Great Falls Main Post Office serves as a federally designated passport acceptance facility in the heart of downtown Great Falls, just off Central Avenue near the Missouri River corridor.
Location & contact
🕑 Hours
| Monday–Friday | By appointment — book at tools.usps.com/rcas/ |
|---|---|
| Saturday–Sunday | Closed |
📍 Location & contact
📖 About this office
The Great Falls Main Post Office serves as a federally designated passport acceptance facility in the heart of downtown Great Falls, just off Central Avenue near the Missouri River corridor. Located in the historic Federal Building at 215 1st Avenue North, Room 135, this USPS location processes new passport applications for adults and children who need to apply in person for the first time or after losing a previous passport.
Appointments at the Great Falls Post Office are scheduled through the USPS passport appointment system at tools.usps.com/rcas. Staff accept the completed DS-11 form, certified citizenship documents, a valid photo ID, and a compliant passport photo. The office also offers on-site passport photo service for an additional fee, making it a convenient one-stop location for most applicants in Cascade County.
First-time applicants, those replacing a lost or stolen passport, and parents bringing children under 16 will find this location convenient for its central downtown position and federal staff familiar with all document requirements. For a full overview of passport acceptance in the city, visit the Great Falls passport offices page.
💡 Good to know
Passport acceptance at this USPS location is by appointment only — walk-ins are not guaranteed. Book your slot at the USPS online scheduler well in advance, especially during spring and summer travel seasons when demand peaks across Montana. Bring all original documents (not photocopies) and a check or money order for government fees; personal checks are accepted but card payments may not be available at the acceptance window. For broader context on passport offices across the state, see the Montana passport offices page.