There are 2 Post Offices in New Castle, Indiana, serving a population of 17,476 people in an area of 8 square miles. There is 1 Post Office per 8,738 people, and 1 Post Office per 3 square miles.
In Indiana, New Castle is ranked 609th of 865 cities in Post Offices per capita, and 569th of 865 cities in Post Offices per square mile.
Find addresses, phone numbers, fax numbers, hours & services for New Castle Post Offices.
United States Postal Service 120 South Memorial Drive New Castle, IN
United States Postal Service 305 South 14th Street New Castle, IN Mailing Service, Postal Services