The Newcastle Main Post Office is a historic post office building in Newcastle, Wyoming. Built in 1932, it was constructed as part of a facilities improvement program by the United States Post Office Department. The post office in Newcastle was nominated to the National Register of Historic Places as part of a thematic study comprising twelve Wyoming post offices built to standardized USPO plans in the early twentieth century. References External links at the National Park Service's NRHP database Newcastle Main Post Office at the Wyoming State Historic Preservation Office Neoclassical architecture in Wyoming Government buildings completed in 1932 Buildings and structures in Weston County, Wyoming Post office buildings in Wyoming Post office buildings on the National Register of Historic Places in Wyoming National Register of Historic Places in Weston County, Wyoming Newcastle, Wyoming Individually listed contributing properties to historic districts on the National Register in Wyoming