Avon is a town in the Farmington Valley region of Hartford County, Connecticut, United States. As of 2010, the town had a population of 18,098. Avon is a suburb of Hartford. Avon Old Farms School, a prestigious boarding school, is located there. In 2005, Avon was named the third-safest town in America by Money Magazine. It is home to the Pine Grove School House, which was built in 1865 and remains open today as a museum.