📍 MARYLAND
USPS Gaithersburg Post Office
Post Office (USPS) · Gaithersburg
The USPS Gaithersburg Post Office sits at 21 South Summit Avenue in Olde Towne, the walkable heart of the city just steps from the MARC rail platform and the old B&O train station.
Location & contact
🕑 Hours
| Appointments | By appointment only — book at tools.usps.com/rcas |
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📍 Location & contact
📖 About this office
The USPS Gaithersburg Post Office sits at 21 South Summit Avenue in Olde Towne, the walkable heart of the city just steps from the MARC rail platform and the old B&O train station. This is the busiest of Gaithersburg's postal counters for travel documents, handling first-time applications for residents across central Montgomery County who would rather sort out their paperwork close to home than drive downtown.
Passport processing here runs by appointment only, which the Postal Service schedules through its online booking tool. Staff review your completed DS-11, witness your signature, verify your citizenship evidence and forward the sealed package to the State Department, so nothing leaves your hands unverified. Photos can usually be taken on site if you have not already had one made.
If this branch is fully booked, two nearby alternatives round out the local options: the other Gaithersburg acceptance counters at City Hall and in Montgomery Village, both a short drive away.
💡 Good to know
Parking in Olde Towne is a mix of short street spaces and a nearby public lot, so leave a few extra minutes at busy times. Bring your ID, a photocopy of it, and the correct fees in the forms the counter accepts — acceptance agents cannot collect walk-in cash for the State Department portion. For a fuller rundown of every counter in town, see the Gaithersburg passport overview.