Town Hall Address 220 Delaware Street New Castle, DE 19720 United States- New Castle County Website https://newcastlecity.delaware.gov/ Zoning (302) 322-9813 220 Delaware Street New Castle, DE 19720 United States Fire District (302) 328-2211 401 South St New Castle, DE 19720 United States Town Clerk (302) 322-9812 220 Delaware Street New Castle, DE 19720 United States Water (302) 322-9812 220 Delaware Street New Castle, DE 19720 United States Sewer 302-395-5700 187A Old Churchmans Road New Castle, DE 19720 United States Tax Collector (302) 322-9812 220 Delaware Street New Castle, DE 19720 United States Code Enforcement (302) 322-9813 220 Delaware Street New Castle, DE 19720 United States County New Castle