Zip Code ReportNew Castle County ZIP codes
Every ZIP code in New Castle County, Delaware, with the city it serves. Open any one for a free neighborhood report.
42 ZIP codes · New Castle County, DE · FIPS 10003
ZIP codes
42 in this county19701Bear19702Newark19703Claymont19706Delaware City19707Hockessin19708Kirkwoodunique19709Middletown19710Montchanin19711Newark19713Newark19714NewarkPO box19715NewarkPO box19716Newark19717Newark19718Newarkunique19720New Castle19721New Castleunique19726New Castleunique19730Odessa19731Port Penn19732Rockland19733Saint Georges19734Townsend19735Winterthur19736Yorklyn19801Wilmington19802Wilmington19803Wilmington19804Wilmington19805Wilmington19806Wilmington19807Wilmington19808Wilmington19809Wilmington19810Wilmington19884Wilmingtonunique19890Wilmingtonunique19892Wilmingtonunique19895Wilmingtonunique19897Wilmingtonunique19898Wilmingtonunique19899WilmingtonPO box
13 of these ZIP codes route mail only. A PO-box or single-recipient ZIP has no residential area behind it, so neighborhood statistics can't be computed for it — those pages say so instead of showing numbers.