More InformationHerriman was established in 1849 by Robert Dansie, Henry Harriman, and Thomas Jefferson Butterfield. A monument located in the Herriman City Cemetery lists the original four families of Herriman as the Thomas Jefferson Butterfield, John Jay Stocking, Robert Cowan Petty, and Henry Harriman families.
As of the census of 2010, there were 21,785 people, 5,542 households, and 5,022 families residing in the town. The population density was 1075.0 people per square mile (64.5/km²). There were 6,022 housing units at an average density of 297.2 per square mile (19.4/km²). The racial makeup of the town was 93.3% White, .3% Native American, 1.3% Asian, 0.5% Pacific Islander, .3% from other races, and 2.3%% from two or more races. Hispanic or Latino of any race were 6.2% of the population.
There were 5,542 households out of which 44.1% had children under the age of 18 living with them, 81.3% were married couples living together, 6.1% had a female householder with no husband present, and 9.4% were non-families. 6.5% of all households were made up of individuals and 1.0% had someone living alone who was 65 years of age or older. The average household size was 3.93 and the average family size was 4.13.
In the town the population was spread out with 44.1% under the age of 18, 6.1% from 18 to 24, 29.0% from 25 to 44, 11.7% from 45 to 64, and 2.6% who were 65 years of age or older. The median age was 24.7 years. For every 100 females there were 102.4 males. For every 100 females age 18 and over, there were 100.7 males. The median income for a household in the town was $56,361, and the median income for a family was $57,404. Males had a median income of $44,135 versus $30,893 for females. The per capita income for the town was $18,991. About 2.9% of families and 3.9% of the population were below the poverty line, including 5.7% of those under age 18 and none of those age 65 or over.
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