Donnybrook is a city in Ward County, North Dakota, United States.

[5] According to the United States Census Bureau, the city has a total area of 0.70 square miles (1.81 km2), all land.

There were 37 housing units at an average density of 52.9 per square mile (20.4/km2).

34.5% of all households were made up of individuals, and 17.2% had someone living alone who was 65 years of age or older.

There were 46 housing units at an average density of 65.7 per square mile (25.4/km2).

22.2% of all households were made up of individuals, and 13.9% had someone living alone who was 65 years of age or older.