Cornwallville 12418 Real EstateCornwallville is located in New York. Cornwallville, New York 12418has a population of 400. Cornwallville 12418 is more family-centric than the surrounding county with 27.16% of the households containing married families with children. The county average for households married with children is 26.95%. The median household income in Cornwallville, New York 12418 is $68,182. The median household income for the surrounding county is $62,810 compared to the national median of $69,021. The median age of people living in Cornwallville 12418 is 41.9 years. Cornwallville WeatherThe average high temperature in July is 81.2 degrees, with an average low temperature in January of 12.1 degrees. The average rainfall is approximately 41.6 inches per year, with 40.5 inches of snow per year. Cornwallville MapReal estate near CornwallvilleNearby CitiesNearby Cities Homes for Sale |