Avon is a town in Washington Township, Hendricks County, Indiana, United States. The population was 6,248 at the 2000 census. The 2005 Indiana Population Estimate Update estimated the population as 8,918. Avon was incorporated in 1995. Previous town names included Hampton, White Lick, Smootsdale and New Philadelphia. The name Avon was placed on a sign by the railroad company.