Berkley is a city in Union Township, Boone County, Iowa, United States.

[4] According to the United States Census Bureau, the city has a total area of 0.21 square miles (0.54 km2), all land.

There were 11 housing units at an average density of 54.5 per square mile (21.0/km2).

There were 14 housing units at an average density of 66.7 per square mile (25.8/km2).

18.2% of all households were made up of individuals, and 9.1% had someone living alone who was 65 years of age or older.

There were 11 housing units at an average density of 52.5 per square mile (20.3/km2).

18.2% of all households were made up of individuals, and 18.2% had someone living alone who was 65 years of age or older.

There were no families and 11.1% of the population living below the poverty line, including no under eighteens and 21.4% of those over 64.