Rolla (/ˈrɒlə/ ROL-ə) is a city in Rolette County, North Dakota, United States.
Rolla was laid out in 1888 in part of Edward Owen's homestead.
[9] In 1890, it was made the county seat, and in the year following on April 21 it was officially a village.
[6] According to the United States Census Bureau, the city has a total area of 1.43 square miles (3.70 km2), all land.
[12] Like most of North Dakota, Rolla has a humid continental climate (Köppen Dfb/Dwb), characterized 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.
Unlike more westerly parts of the Dakotas, above-freezing temperatures are rare during winter: only sixteen afternoons top freezing during the three winter months, and fewer than half of all afternoons in March and November.
There were 619 housing units at an average density of 432.9 per square mile (167.1/km2).
40.3% of all households were made up of individuals, and 18.8% had someone living alone who was 65 years of age or older.
36.4% of all households were made up of individuals, and 21.5% had someone living alone who was 65 years of age or older.