Hamilton, Iowa 2.77

Hamilton is a city in Marion County, Iowa, United States. The population was 130 at the 2010 census.GeographyHamilton is located at .According to the United States Census Bureau, the city has a total area of 0.54sqmi, all of it land.Demographics2010 censusAs of the census of 2010, there were 130 people, 49 households, and 36 families residing in the city. The population density was 240.7PD/sqmi. There were 54 housing units at an average density of 100.0/sqmi. The racial makeup of the city was 100.0% White. Hispanic or Latino of any race were 1.5% of the population.There were 49 households of which 38.8% had children under the age of 18 living with them, 40.8% were married couples living together, 22.4% had a female householder with no husband present, 10.2% had a male householder with no wife present, and 26.5% were non-families. 24.5% of all households were made up of individuals and 12.3% had someone living alone who was 65 years of age or older. The average household size was 2.65 and the average family size was 2.97.The median age in the city was 39.5 years. 24.6% of residents were under the age of 18; 9.4% were between the ages of 18 and 24; 26.2% were from 25 to 44; 28.4% were from 45 to 64; and 11.5% were 65 years of age or older. The gender makeup of the city was 52.3% male and 47.7% female.