New Castle County, website
New Castle County in Delaware uses area code 302. This directory lists the physical address and contact information of the relevant government agencies in New Castle, including the Clerk’s Office, Sheriff’s Office, and the Health Department.
Sheriff’s Office
City/County Building
800 N. French St., 5th Floor
Wilmington, DE 19801
Phone: (302) 395-8450
Fax: (302) 395-8460
Police Department
3601 N. Dupont Hwy.
New Castle, DE 19720
Phone: (302) 573-2800
Superior Court
Leonard L. Williams Justice Center
500 N. King Street
Wilmington, DE 19801
Phone: (302) 255-0800
Fax: (302) 255-2264
Court of Chancery
Leonard L. Williams Justice Center
500 N. King Street
Wilmington, DE 19801
Phone: (302) 255-0544
Court of Common Pleas
Leonard L. Williams Justice Center
500 N. King Street
Wilmington, DE 19801
Phone: (302) 255-0900
County Clerk
800 North French Street
Wilmington, Delaware, 19801
Phone: (302) 395-7730
Assessor
87 Reads Way
Wilmington, DE 19886
Phone: (302) 395-5520
New Castle County Jail
NCC Police Headquarters
3601 North DuPont Highway
Route 13, Wilmington, DE 19801
Phone: (302) 395-8450
Emergency Management
3601 N. DuPont Highway
New Castle, DE 19720
Phone: (302) 395-2700
Fax: (302) 395-2705
Fire Department
700 West Ave.
New Castle, DE 19720
Phone: (302) 654-2817
Human Resources
87 Reads Way
New Castle, DE 19720
Phone: (302) 395-5180
Fax: (302) 395-5190
Health and Social Services
1901 N. Dupont Hwy.
New Castle, DE 19720
Phone: (302) 255-9040