It is listed on the United States National Register of Historic Places.

The building was listed in the National Register of Historic Places on February 10, 1983.

[2] The building remained an active post office for several more years.

Control of the building was turned over to the city in 2002 for use as a museum and cultural center.

The building was restored and renovated into the National Museum of Organized Crime and Law Enforcement in February 2012.