Avon Park is a city in Highlands County, Florida, United States. As of the 2010 census the population was 8,836, and in 2018 the estimated population was 10,695. It is the oldest city in Highlands County, and was named after Stratford-upon-Avon, England. The median household income was $23,576. VISIT OFFICIAL CITY SITE: http://avonpark.cc