Ardoch is a city in Walsh County, North Dakota, United States.

According to the United States Census Bureau, the city has a total area of 0.26 square miles (0.67 km2), all land.

There were 39 housing units at an average density of 150.0 per square mile (57.9/km2).

15.8% of all households were made up of individuals, and 5.3% had someone living alone who was 65 years of age or older.

27.8% of all households were made up of individuals, and 5.6% had someone living alone who was 65 years of age or older.

There were 35.7% of families and 31.4% of the population living below the poverty line, including 21.9% of under eighteens and 58.3% of those over 64.