Plaza is a city in Mountrail County, North Dakota in the United States. The population was 171 at the 2010 census. Plaza was founded in 1906.
Plaza is located at 48°1′29″N 101°57′38″W / 48.02472°N 101.96056°W / 48.02472; -101.96056 (48.024807, -101.960556).
According to the United States Census Bureau, the city has a total area of 1.1 square miles (3.0 km²), of which, 1.1 square miles (2.9 km²) of it is land and 0.88% is water.