no husband present, and 17.3% were non-families. 13.2% of all households were made up of individuals, and 6.1% had someone living alone who was 65 years of age or older. The average household size was 2.67 and the average family size was 2.92. Age spread: 25.8% under the age of 18, 7.0% from 18 to 24, 28.7% from 25 to 44, 24.0% from 45 to 64, and 14.4% who were 65 years of age or older. The median age was 39 years. For every 100 females, there were 103.1 males. For every 100 females age 18 and over, there were 100.8 males. The median income for a household in the city was $45,179, and the median income for a family was $48,906. Males had a median income of $34,444 versus $25,000 for females. The per capita income for the city was $18,129. About 1.0% of families and 1.6% of the population were below the poverty line, including 2.1% of those under age 18 and none of those age 65 or over. Education The Waterloo Community School District serves the community. References External links City Data Comprehensive statistical data and more about Elk Run Heights Cities in Black Hawk County, Iowa Cities in Iowa Waterloo – Cedar Falls metropolitan area 1951 establishments in Iowa