Built in 1911, and enlarged in the 1960s and 1970s, it is one of the region's only examples of Beaux Arts architecture.

[1] Dover's main post office occupies an entire city block in its downtown area, bounded by Washington, Green, Fayette, and Chestnut Streets.

The main portion of the building, a single-story beige brick Beaux Arts structure, was designed by James Knox Taylor and completed in 1911.

[2] A major addition in 1963 expanded the work area to the rear and relocated the public lobby space and postmaster's office.

Despite these alterations, the building exterior retains most of its Beaux Arts features, and is one of the few examples of this architectural style in southeastern New Hampshire.