Hancock got its start in the year 1880, following construction of the Rock Island Railroad through the territory. It was named for its founder, F. H. Hancock.
Geography
Hancock is located at . According to the United States Census Bureau, the city has a total area of, of which is land and is water.
As of the census of 2010, there were 196 people, 88 households, and 62 families living in the city. The population density was. There were 95 housing units at an average density of. The racial makeup of the city was 95.9% White, 0.5% Native American, 2.0% from other races, and 1.5% from two or more races. Hispanic or Latino of any race were 2.6% of the population. There were 88 households of which 26.1% had children under the age of 18 living with them, 55.7% were married couplesliving together, 6.8% had a female householder with no husband present, 8.0% had a male householder with no wife present, and 29.5% were non-families. 23.9% of all households were made up of individuals and 13.6% 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 2.53. The median age in the city was 48 years. 18.4% of residents were under the age of 18; 4.6% were between the ages of 18 and 24; 23% were from 25 to 44; 32.1% were from 45 to 64; and 21.9% were 65 years of age or older. The gender makeup of the city was 50.0% male and 50.0% female.
2000 census
As of the census of 2000, there were 207 people, 90 households, and 68 families living in the city. The population density was 277.1 people per square mile. There were 97 housing units at an average density of 129.9 per square mile. The racial makeup of the city was 99.52% White and 0.48% Native American. Hispanic or Latino of any race were 0% of the population. There were 90 households out of which 21.1% had children under the age of 18 living with them, 61.1% were married couples living together, 8.9% had a female householder with no husband present, and 24.4% were non-families. 22.2% of all households were made up of individuals and 13.3% had someone living alone who was 65 years of age or older. The average household size was 2.30 and the average family size was 2.68. 16.4% are under the age of 18, 10.1% from 18 to 24, 23.2% from 25 to 44, 30.4% from 45 to 64, and 19.8% who were 65 years of age or older. The median age was 48 years. For every 100 females, there were 99.0 males. For every 100 females age 18 and over, there were 96.6 males. The median income for a household in the city was $33,056, and the median income for a family was $37,500. Males had a median income of $31,429 versus $19,083 for females. The per capita income for the city was $17,200. About 2.6% of families and 2.5% of the population were below the poverty line, including 9.3% of those under the age of eighteen and none of those sixty five or over.