Cadiz is a town in Harrison Township, Henry County, Indiana, United States. The population was 150 at the 2010 census. History Cadiz was laid out and platted in 1836, and named after Cadiz, Ohio, the former home of many of the early settlers. A post office was established at Cadiz in 1837, and remained in operation until it was discontinued in 1923. Geography Cadiz is located at (39.951219, -85.486347). According to the 2010 census, Cadiz has a total area of , all land. Demographics 2010 census As of the census of 2010, there were 150 people, 51 households, and 37 families living in the town. The population density was . There were 56 housing units at an average density of . The racial makeup of the town was 100.0% White. Hispanic or Latino of any race were 2.7% of the population. There were 51 households, of which 45.1% had children under the age of 18 living with them, 54.9% were married couples living together, 7.8% had a female householder with no husband present, 9.8% had a male householder with no wife present, and 27.5% were non-families. 19.6% of all households were made up of individuals, and 3.9% had someone living alone who was 65 years of age or older. The average household size was 2.94 and the average family size was 3.30. The median age in the town was 35.2 years. 32% of residents were under the age of 18; 7.4% were between the ages of 18 and 24; 30% were from 25 to 44; 24% were from 45 to 64; and 6.7% were 65 years of age or older. The gender makeup of the town was 48.7% male and 51.3% female. 2000 census As of the census of 2000, there were 161 people, 51 households, and 41 families living in the town. The population density was . There were 55 housing units at an average density of . The racial makeup of the town was 93.79% White, 3.73% Asian, 2.48% from other races. Hispanic or Latino of any race were 2.48% of the population. There were 51 households, out of which 41.2% had children under the age of 18 living with them, 56.9% were married couples living together, 17.6% had a female householder with no husband present, and 19.6% were non-families. 11.8% of all households were made up of individuals, and 7.8% had someone living alone who was 65