Direct answer: The B. Free Franklin Post Office in Philadelphia, Pennsylvania is the post office most commonly cited as not flying the American flag. Context and details:
- The Franklin Post Office, housed in a historic Philadelphia building once owned by Benjamin Franklin, operates as a colonial-themed facility and is noted for not displaying the U.S. flag. It also uses a “B. Free Franklin” signature stamp and preserves period-appropriate customs (such as dress and writing implements) to evoke Franklin’s era. [sources describing the Franklin post office and its flag status include local historical coverage and USPS-managed information about the site] [citation needed].
Notes:
- This is a unique, historically themed post office within Independence National Historical Park in Philadelphia, distinct from standard federal post offices that typically fly the U.S. flag. If you’re researching for a specific event, visit, or citation, I can help locate the most authoritative current source or provide directions to the site.
