The district contains two contributing buildings; the Mount Kisco Town and Village Hall (1932) and the United States Post Office (1936).

The Town and Village Hall is a 2-story, cruciform plan brick building on a limestone foundation and topped by a slate-covered hipped and gable roof.

The Village Library formerly occupied the second floor until a separate, adjacent building was constructed in the 1960s.

The Post Office is a 1+1⁄2-story brick building set on a limestone foundation and topped by a slate shingle clad gable roof.

The interior features murals depicting the history of Mount Kisco executed by artist Thomas Donnelly in 1936.