Derby, Iowa

Derby is a city in Lucas County, Iowa, United States. 90 people lived here in 2020, when the census was taken. It was founded in 1872. The city is about 0.26 square miles big.
Demographics.
2010 Census.
During the 2010 census, there were 115 people, 47 households, and 31 families living in the city. There were about 442.3 inhabitants per square mile (170.8/km2). There were 55 homes at an average density of 211.5 per square mile (81.7/km2). Most of the city is white and 0.9% from two or more races.
There were 47 households, of which 31.9% had children under the age of 18 living with them, 53.2% were married couples living together, 8.5% had a female householder with no husband present, 4.3% had a male householder with no wife present, and 34.0% were non-families. 25.5% of all households were made up of individuals, and 10.7% had someone living alone who was 65 years of age or older. The average household size was 2.45 and the average family size was 2.97.
The average age in the city was 41.5 years. 24.3% of residents were under the age of 18; 3.6% were between the ages of 18 and 24; 25.2% were from 25 to 44; 31.3% were from 45 to 64; and 15.7% were 65 years of age or older. The gender makeup of the city was 51.3% male and 48.7% female.