Killingworth Real EstateKillingworth is located in Connecticut. Killingworth, Connecticut has a population of 6,441. Killingworth is more family-centric than the surrounding county with 35.78% of the households containing married families with children. The county average for households married with children is 28.98%. The median household income in Killingworth, Connecticut is $113,413. The median household income for the surrounding county is $81,673 compared to the national median of $57,652. The median age of people living in Killingworth is 48.1 years. Killingworth WeatherThe average high temperature in July is 84.9 degrees, with an average low temperature in January of 20.8 degrees. The average rainfall is approximately 49.4 inches per year, with 35.6 inches of snow per year. Killingworth MapReal estate near KillingworthNearby CitiesNearby Cities Homes for Sale |