Milnor is a city in Sargent County, North Dakota, United States.

[8] As of the census of 2010, there were 653 people, 289 households, and 189 families residing in the city.

There were 350 housing units at an average density of 372.3 per square mile (143.7/km2).

29.8% of all households were made up of individuals, and 15.6% had someone living alone who was 65 years of age or older.

There were 338 housing units at an average density of 362.0 per square mile (139.8/km2).

31.9% of all households were made up of individuals, and 20.3% had someone living alone who was 65 years of age or older.