New Castle is located in Delaware. New Castle, Delaware 19720 has population of 4,964. New Castle 19720 is more family-centric than the surrounding county with 28% of the households with children.
The median household income in New Castle, Delaware 19720 is $68,698. The median household income for the surrounding county is $76,362 compared to the national median of $66,222. The median age of people living in New Castle 19720 is 45 years.
The average high temperature in July is 86 degrees, with an average low temperature in January of 23.7 degrees. The annual precipitation is 42.81.
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