Buffalo is a city in Cass County, North Dakota, United States. The population was 188 at the 2010 census. Buffalo was founded in 1878.
The first settlement at Buffalo was made in 1878. A post office called Buffalo has been in operation since 1883. The city took its name from Buffalo, New York.
Buffalo is located at 46°55′13″N 97°33′03″W.
According to the United States Census Bureau, the city has a total area of 0.23 square miles (0.60 km2), all of it land.
As of the census of 2010, there were 188 people, 92 households, and 52 families living in the city. The population density was 817.4 inhabitants per square mile (315.6/km2). There were 101 housing units at an average density of 439.1 per square mile (169.5/km2). The racial makeup of the city was 92.6% White, 0.5% African American, 1.6% Native American, 0.5% Asian, and 4.8% from two or more races.
There were 92 households of which 19.6% had children under the age of 18 living with them, 50.0% were married couples living together, 3.3% had a female householder with no husband present, 3.3% had a male householder with no wife present, and 43.5% were non-families.