These refrigerated rail cars shipped Avon crops as far as the east coast providing fresh lettuce weeks after the nation's standard lettuce harvest was gone. Through the years Avon land produced cattle, hay, potatoes, peas, oats and, starting in the 1940's, sheep. By this time most of Avon's homesteading families were long gone but descendants of William Nottingham had stayed on and owned and operated nearly all of the land called Avon.
By 1972 Vail had become one of the top destination ski resorts in the country and pressure mounted “down valley” in Avon for ranch land to be developed. One branch of the Nottingham family sold its controlling interest in the land to Benchmark Companies and the Town of Avon was incorporated on February 24, 1978. The new town was comprised of the land in present day central and western Avon including the area that soon became Nottingham Park.
After ten years, in 1988, Avon had a permanent population of 1,500 people. Another branch of the Nottingham family sold the land encompassing present day eastern Avon and the northern hillside to EMD Limited Liability Company, which later formed today’s Traer Creek LLC with Catellus to develop most of the purchased Nottingham property. Residents continued to move to Avon and, in 1998, Avon was home to over 3,000 residents. As of the 2010 census, Avon's population had increased to 6,447 people.