Elkton, South Dakota

As of the census[13] of 2010, there were 736 people, 286 households, and 190 families residing in the city. The population density was 474.8 inhabitants per square mile (183.3/km²). There were 324 housing units at an average density of 209.0 per square mile (80.7/km²). The racial makeup of the city was 85.2% White, 0.4% African American, 12.1% from other races, and 2.3% from two or more races. Hispanic or Latino of any race were 14.5% of the population.

There were 286 households, of which 32.9% had children under the age of 18 living with them, 53.5% were married couples living together, 7.3% had a female householder with no husband present, 5.6% had a male householder with no wife present, and 33.6% were non-families. 28.7% of all households were made up of individuals, and 14% had someone living alone who was 65 years of age or older. The average household size was 2.53 and the average family size was 3.12.

The median age in the city was 31.9 years. 26.6% of residents were under the age of 18; 7.8% were between the ages of 18 and 24; 29.3% were from 25 to 44; 22.1% were from 45 to 64; and 14.1% were 65 years of age or older. The gender makeup of the city was 51.8% male and 48.2% female.

As of the census[6] of 2000, there were 677 people, 267 households, and 185 families residing in the city. The population density was 436.2 inhabitants per square mile (168.4/km²). There were 289 housing units at an average density of 186.2 per square mile (71.9/km²). The racial makeup of the city was 98.82% White, 0.15% African American, 0.30% Native American, and 0.74% from two or more races. Hispanic or Latino of any race were 0.44% of the population.

There were 267 households, out of which 33.0% had children under the age of 18 living with them, 57.3% were married couples living together, 8.2% had a female householder with no husband present, and 30.7% were non-families. 27.7% of all households were made up of individuals, and 17.2% had someone living alone who was 65 years of age or older. The average household size was 2.51 and the average family size was 3.08.

In the city, the population was spread out, with 27.9% under the age of 18, 6.8% from 18 to 24, 24.1% from 25 to 44, 21.1% from 45 to 64, and 20.1% who were 65 years of age or older. The median age was 39 years. For every 100 females, there were 96.2 males. For every 100 females age 18 and over, there were 96.8 males.

The median income for a household in the city was $36,667, and the median income for a family was $47,969. Males had a median income of $30,313 versus $21,667 for females. The per capita income for the city was $18,912. About 5.9% of families and 6.8% of the population were below the poverty line, including 2.9% of those under age 18 and 18.7% of those age 65 or over.