New Castle, Pennsylvania ZIP Code - United States

The location New Castle, PA has 6 differents ZIP Codes. Check the map below to check your ZIP Code.

	City Name	ZIP Code	ZIP Type	Estimated Population
New Castle, PA	PRIMARY	16101	STANDARD	25.595
New Castle, PA	PRIMARY	16102	STANDARD	4.613
New Castle, PA	PRIMARY	16103	PO BOX	0
New Castle, PA	PRIMARY	16105	STANDARD	13.571
New Castle, PA	PRIMARY	16107	PO BOX	0
New Castle, PA	PRIMARY	16108	STANDARD	0

Postal Zone of New Castle, PA - USA

New Castle, PA belongs to Lawrence county. Check the list of Lawrence county ZIP Code.

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PRIMARY: means an the primary city name. Official city name, although the city name might also have another acceptable name.
ACCEPTABLE: means an adequate city name. City names that are abbreviated will frequently be listed as unacceptable because abbreviations are not an acceptable city name format.
IMPROPER/NOT ACCEPTABLE: Means an inadequate city name has been entered or received based on information entered.
UNIQUE: Assigned to a company, government agency, or entity with sufficient mail volume, based on average daily volume of letter size mail received, availability of ZIP Code numbers in the postal area, and the US mail service cost-benefit analysis.