The U.S. Post Office, Courthouse, and Customhouse, also known as Main Post Office and the Wilmington Trust Headquarters, is a historic post office, courthouse, and custom house, located on Rodney Square in Wilmington, New Castle County, Delaware. It was designed by Irwin & Leighton in 1933–1935, and building was completed in 1937. It is in the Classical Revival. It is a three-story, cut stone structure with six large stone pillars across the main entrance. the gross building area is 104,669 sq. ft.
U.S. Post Office, Courthouse, and Customhouse | |
U.S. National Register of Historic Places | |
U.S. Historic district Contributing property | |
![]() Former Post Office, Courthouse and Customhouse | |
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![]() Interactive map showing the location of the U.S. Post Office, Courthouse, and Customhouse, Wilmington | |
Location | 11th and Market Sts., Wilmington, Delaware |
---|---|
Coordinates | 39°44′48″N 75°32′48″W / 39.74667°N 75.54667°W |
Area | 1.3 acres (0.53 ha) |
Built | 1933-35, 1937 |
Built by | Irwin & Leighton |
Architect | Associated Federal Architects |
Architectural style | Classical Revival |
Part of | Rodney Square Historic District (ID11000522) |
NRHP reference No. | 79000638 |
Significant dates | |
Added to NRHP | June 14, 1979 |
Designated CP | March 24, 2017 |

It was listed on the National Register of Historic Places in 1979. A modern Wilmington Trust office building now emerges from the facade.
See also

- Old Customshouse (Wilmington, Delaware)
- Wilmington Trust Newark Branch
- List of United States federal courthouses in Delaware
- List of United States post offices
- National Register of Historic Places listings in Wilmington, Delaware
References
- "National Register Information System". National Register of Historic Places. National Park Service. March 13, 2009.
- Ferguson, Logan I. (September 30, 2010). "National Register of Historic Places Registration Form: Rodney Square Historic District". National Archives. National Register of Historic Places. Retrieved May 25, 2024.
- Charles A. Preston, Jr. (August 1978). "National Register of Historic Places Inventory/Nomination: U.S. Post Office, Courthouse, and Customhouse". and Accompanying 15 photos

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The U S Post Office Courthouse and Customhouse also known as Main Post Office and the Wilmington Trust Headquarters is a historic post office courthouse and custom house located on Rodney Square in Wilmington New Castle County Delaware It was designed by Irwin amp Leighton in 1933 1935 and building was completed in 1937 It is in the Classical Revival It is a three story cut stone structure with six large stone pillars across the main entrance the gross building area is 104 669 sq ft U S Post Office Courthouse and CustomhouseU S National Register of Historic PlacesU S Historic district Contributing propertyFormer Post Office Courthouse and CustomhouseShow map of DelawareShow map of the United StatesInteractive map showing the location of the U S Post Office Courthouse and Customhouse WilmingtonLocation11th and Market Sts Wilmington DelawareCoordinates39 44 48 N 75 32 48 W 39 74667 N 75 54667 W 39 74667 75 54667Area1 3 acres 0 53 ha Built1933 35 1937Built byIrwin amp LeightonArchitectAssociated Federal ArchitectsArchitectural styleClassical RevivalPart ofRodney Square Historic District ID11000522 NRHP reference No 79000638Significant datesAdded to NRHPJune 14 1979Designated CPMarch 24 2017 Wilmington Trust headquarters in Rodney Square It was listed on the National Register of Historic Places in 1979 A modern Wilmington Trust office building now emerges from the facade See alsoPostcard showing building prior to vertical addition c 1930 45 Old Customshouse Wilmington Delaware Wilmington Trust Newark Branch List of United States federal courthouses in Delaware List of United States post offices National Register of Historic Places listings in Wilmington DelawareReferences National Register Information System National Register of Historic Places National Park Service March 13 2009 Ferguson Logan I September 30 2010 National Register of Historic Places Registration Form Rodney Square Historic District National Archives National Register of Historic Places Retrieved May 25 2024 Charles A Preston Jr August 1978 National Register of Historic Places Inventory Nomination U S Post Office Courthouse and Customhouse and Accompanying 15 photos Wikimedia Commons has media related to Wilmington Trust Building This article about a property in Delaware on the National Register of Historic Places is a stub You can help Wikipedia by expanding it vte