The United States Post Office and Custom House is a demolished building in New Haven, Connecticut.
A contract was awarded September 29, 1855, and was completed February 14, 1860, at a cost of $158,614.50.
An additional plot of ground fronting northwest, 38 feet 6 inches on Gregson Street, and northeast 52 feet 9 inches on Center Street was purchased March 18, 1893, for $23,000, and a contract entered into December 11, 1893, for another extension to the building.
This was a one-story brick annex extending northeasterly along the front on Center Street.
The building served the United States Government in that capacity until 1919 when it was sold to a private firm and became an apartment house until 1952.