Avon is a town in Washington Township, Hendricks County, Indiana, United States. The population was 21,474 at the 2020 census. It is part of the Indianapolis metropolitan area. History The first settlement at Avon was made around 1830. The first post office at Avon opened as "Smootsdell", in 1868. It was renamed "Avon" in 1870, and remained in operation until it was discontinued in 1902. The present name is after River Avon in England. Geography Avon is located in eastern Hendricks County at (39.763160, −86.387900). It is bordered to the north by Brownsburg, to the west by Danville, the Hendricks County seat, to the south by Plainfield, and to the east by the city of Indianapolis in Marion County. U.S. Route 36 is the main east–west road through the town, leading east to downtown Indianapolis and west to the center of Danville. Indiana State Road 267 formerly crossed US-36 in the center of Avon, leading north to Brownsburg and south to Plainfield, but that stretch of 267 was decommissioned in 2013, and the section through Avon is now officially called Avon Avenue. According to the 2010 census, Avon has a total area of , of which (or 99.3%) is land and (or 0.7%) is water. Avon is north to south. Demographics 2010 census As of the 2010 census, there were 12,446 people, 4,457 households, and 3,384 families living in the town. The population density was . There were 4,742 housing units at an average density of . The racial makeup of the town was 86.7% White, 5.9% Black, 0.3% Native American, 3.3% Asian, 0.1% Pacific Islander, 1.4% from other races, and 2.2% from two or more races. Hispanic or Latino of any race were 4.3% of the population. There were 4,457 households, of which 45.6% had children under the age of 18 living with them, 62.5% were married couples living together, 9.3% had a female householder with no husband present, 4.1% had a male householder with no wife present, and 24.1% were non-families. 19.4% of all households were made up of individuals, and 5.8% had someone living alone who was 65 years of age or older. The average household size was 2.77 and the average family size was 3.20. The median age in the town was 33.9 years. 30.2% of residents were under the age of 18; 6.6% were between the ages of 18 and 24; 31.7% were from 25