Berkley is a city in Union Township, Boone County, Iowa, United States. The population was 23 at the 2020 census, down 4.2% from 24 in 2000. History Berkley was laid out as a town in 1883. Geography Berkley is located at (41.946123, -94.113820). According to the United States Census Bureau, the city has a total area of , all land. Beaver Creek flows near the town site. Demographics 2010 census As of the census of 2010, there were 32 people, 11 households, and 9 families living in the city. The population density was . There were 14 housing units at an average density of . The racial makeup of the city was 96.9% White and 3.1% from other races. Hispanic or Latino of any race were 3.1% of the population. There were 11 households, of which 36.4% had children under the age of 18 living with them, 45.5% were married couples living together, 9.1% had a female householder with no husband present, 27.3% had a male householder with no wife present, and 18.2% were non-families. 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. The average household size was 2.91 and the average family size was 2.89. The median age in the city was 42 years. 25% of residents were under the age of 18; 9.3% were between the ages of 18 and 24; 18.9% were from 25 to 44; 28.2% were from 45 to 64; and 18.8% were 65 years of age or older. The gender makeup of the city was 59.4% male and 40.6% female. 2000 census As of the census of 2000, there were 24 people, 11 households, and 8 families living in the city. The population density was . There were 11 housing units at an average density of . The racial makeup of the city was 100.00% White. There were 11 households, out of which 9.1% had children under the age of 18 living with them, 54.5% were married couples living together, 27.3% had a female householder with no husband present, and 18.2% were non-families. 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. The average household size was 2.18 and the average family size was 2.33. In the city, the population was spread out, with 8.3%