Sightseeing

Old Post Office and Customshouse

📍 281 Front St, Key West, FL 33040, USA

No photos yet

3.5/ 5.0

★★★★☆

Introduction

The Old Post Office and Customshouse is located near Mallory Square in Key West, Florida, and is a U.S. National Historic Landmark designed by architect Richard A. Gilbert and completed in 1891. This three-story coral stone building simultaneously served as a post office, customshouse, and courthouse, and was the southernmost federal government building in the United States at the time. The architecture blends Romanesque Revival style with local coral stone construction, with exterior walls built from locally quarried coral rock blocks, giving it unique Florida character. The building still functions as a post office today, one of the few 19th-century federal buildings still in operation. Visitors can enter to experience century-old postal history and mail postcards stamped with the Key West postmark.

✨ Highlights

National Historic Landmark

1891 federal building designated as U.S. National Historic Landmark

Coral Stone Construction

Exterior walls of locally quarried coral rock, unique Florida character

Triple Function

Historically served as post office, customshouse and courthouse

Southernmost Federal Building

Was the southernmost U.S. federal building at the time

Still Operating Post Office

One of few 19th-century federal post offices still in operation

Romanesque Revival

Blends Romanesque Revival architecture, dignified and elegant

🛈 Practical Info

→Hours：Mon-Fri 9:00-16:00, closed federal holidays

→Admission：Free

→Duration：30-45 minutes

→Address：281 Front St, Key West, FL 33040

→Transport：Next to Mallory Square, walkable in Old Town Key West

→Services：Buy stamps and mail postcards with Key West postmark

💡 Tips

• Mail postcards with Key West postmark as a unique souvenir

• Building is operational, do not disturb postal operations

• Combine with Mallory Square and Key West Lighthouse

• Notice the unique coral stone wall texture, a local architectural feature

• Closed on federal holidays, check hours before visiting

• Follow post office photography rules, some areas restricted

FAQ

Any practical tips for visiting Old Post Office and Customshouse?

Mail postcards with Key West postmark as a unique souvenir Building is operational, do not disturb postal operations

Information on this page is compiled from public sources. Opening hours, ticket prices and other details may change — please verify with official sources before your visit.