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Rolla ( ROL-ə) is a city in Rolette County, North Dakota, United States. It is the county seat of Rolette County. The population was 1,280 at the 2010 census. The city contains a small park and a small outdoor pool.
Rolla was laid out in 1888. The name Rolla was most likely derived from Rolette, the county in which the city is located. A post office has been in operation in Rolla since 1888. The city was incorporated in 1907.
Rolla is located at 48°51′35″N 99°36′55″W.
According to the United States Census Bureau, the city has a total area of 1.43 square miles (3.70 km2), all of it land.
Like most of North Dakota, Rolla has a humid continental climate (Köppen Dfb/Dwb), characterised by warm summers and frigid, dry winters. With an average January low of −2.4 °F or −19.1 °C it is one of the coldest places in the contiguous United States and is comparably cold in winter to Nome, Alaska sixteen degrees further north. As many as 48 mornings can be expected to fall to or below 0 °F or −17.8 °C based on 1981-2010 data, although based on the cooler 1971-2000 data the figure was as many as 57.4 mornings this cold, and all but one morning fell to or below 0 °F (−17.8 °C) in January 1950 and January 1982.