Andover is a city in Clinton County, Iowa, United States. The population was 109 at the 2020 census. History Andover was platted in 1886, and incorporated as a town in 1910. It was named by a railroad official after Andover, Vermont. Andover's population was 83 in 1925. Geography Andover is located at (41.978834, -90.251713). According to the United States Census Bureau, the city has a total area of , all land. Demographics 2010 census As of the census of 2010, there were 103 people, 38 households, and 27 families living in the city. The population density was . There were 40 housing units at an average density of . The racial makeup of the city was 100.0% White. There were 38 households, of which 47.4% had children under the age of 18 living with them, 52.6% were married couples living together, 10.5% had a female householder with no husband present, 7.9% had a male householder with no wife present, and 28.9% were non-families. 18.4% of all households were made up of individuals, and 18.4% had someone living alone who was 65 years of age or older. The average household size was 2.71 and the average family size was 3.15. The median age in the city was 30.5 years. 29.1% of residents were under the age of 18; 7.8% were between the ages of 18 and 24; 35% were from 25 to 44; 14.6% were from 45 to 64; and 13.6% were 65 years of age or older. The gender makeup of the city was 43.7% male and 56.3% female. 2000 census As of the census of 2000, there were 87 people, 39 households, and 26 families living in the city. The population density was . There were 40 housing units at an average density of . The racial makeup of the city was 94.25% White, and 5.75% from two or more races. There were 39 households, out of which 35.9% had children under the age of 18 living with them, 51.3% were married couples living together, 7.7% had a female householder with no husband present, and 33.3% were non-families. 30.8% of all households were made up of individuals, and 23.1% had someone living alone who was 65 years of age or older. The average household size was 2.23 and the average family size was 2.77. In the city, the population was spread out, with 26.4% under the age of 18,