Hopkinton, Iowa

As of the census[8] of 2010, there were 628 people, 266 households, and 185 families living in the city. The population density was 1,012.9 inhabitants per square mile (391.1/km²). There were 294 housing units at an average density of 474.2 per square mile (183.1/km²). The racial makeup of the city was 99.0% White, 0.3% from other races, and 0.6% from two or more races. Hispanic or Latino of any race were 0.8% of the population.

There were 266 households, of which 30.8% had children under the age of 18 living with them, 51.5% were married couples living together, 12.0% had a female householder with no husband present, 6.0% had a male householder with no wife present, and 30.5% were non-families. 25.9% 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 2.36 and the average family size was 2.76.

The median age in the city was 43.8 years. 24% of residents were under the age of 18; 7.7% were between the ages of 18 and 24; 20.6% were from 25 to 44; 28.7% were from 45 to 64; and 19.1% were 65 years of age or older. The gender makeup of the city was 49.2% male and 50.8% female.

As of the census of 2000, there were 681 people, 275 households, and 187 families living in the city. The population density was 1,103.5 inhabitants per square mile (426.1/km²). There were 292 housing units at an average density of 473.2 per square mile (182.7/km²). The racial makeup of the city was 98.68% White, and 1.32% from two or more races. Hispanic or Latino of any race were 0.15% of the population.

There were 275 households, out of which 34.2% had children under the age of 18 living with them, 52.7% were married couples living together, 11.3% had a female householder with no husband present, and 32.0% were non-families. 26.9% of all households were made up of individuals, and 14.5% had someone living alone who was 65 years of age or older. The average household size was 2.48 and the average family size was 3.03.

In the city, the population was spread out, with 28.0% under the age of 18, 8.2% from 18 to 24, 28.3% from 25 to 44, 19.1% from 45 to 64, and 16.3% who were 65 years of age or older. The median age was 37 years. For every 100 females, there were 102.7 males. For every 100 females age 18 and over, there were 90.7 males.

The median income for a household in the city was $33,958, and the median income for a family was $42,589. Males had a median income of $28,333 versus $19,773 for females. The per capita income for the city was $13,707. About 3.4% of families and 4.9% of the population were below the poverty line, including 2.6% of those under age 18 and 7.2% of those age 65 or over.