William Penn Annex Post Office

The William Penn Annex Post Office sits at the corner of Market and 9th Street in the heart of Center City, making it one of the most accessible passport acceptance locations in all of Philadelphia. The building serves as a workhorse of the city’s postal infrastructure, handling heavy daily traffic from downtown businesses, residents, and commuters who arrive via SEPTA’s Market-Frankford Line just steps away.

Passport applications accepted here go through a thorough review of your DS-11 form, citizenship documents, and government-issued photo ID before being forwarded to a regional processing center. All appointments must be scheduled in advance at tools.usps.com/rcas. Because demand is high at this central location, booking several weeks ahead is strongly recommended. The office does not issue passports on-site; completed applications are routed to the appropriate State Department facility.

Given its proximity to Philadelphia City Hall and the other passport acceptance offices in Philadelphia, this location pairs well with a day of errands in Center City. Bring all original documents plus one photocopy of each—the acceptance agent will verify everything before sealing your packet.

The William Penn Annex is steps from Philadelphia’s downtown core and easily reached by subway, bus, or on foot from most Center City hotels. Because foot traffic here is substantial, same-week appointments are rarely available—plan to book at least two to three weeks in advance. If your travel falls within 14 days, you may qualify for a same-day appointment at the Philadelphia Passport Agency at the Nix Federal Building on 9th Street, roughly two blocks north. For a full picture of acceptance offices across the state, visit our Pennsylvania passport guide.