Glenfield is a rural city in Foster County, North Dakota, United States.

According to the United States Census Bureau, the city has a total area of 0.14 square miles (0.36 km2), all land.

43.2% of all households were made up of individuals, and 22.8% had someone living alone who was 65 years of age or older.

29.8% of all households were made up of individuals, and 19.3% had someone living alone who was 65 years of age or older.

There were 23.3% of families and 24.8% of the population living below the poverty line, including 24.1% of under eighteens and 46.7% of those over 64.