19720 is zip code located in New Castle, Delaware. The population is 61,095, making 19720 the largest zipcode in New Castle and the largest in New Castle County.
There are 17 public schools in 19720 with an average Homefacts rating of C. The total crime rate for New Castle is low in the zip code 19720. Unemployment in 19720 is very high.
Zip codes within New Castle include 19721.