New Castle, PA zip codes
New Castle, Pennsylvania has 6 zip codes (3 residential, 3 PO box or single-organization). Most of it is in Lawrence County. Together these zip codes are home to about 51K people.
Zip codes
6
Population
51K
All zips combined
Largest zip
16101
30,767 residents
Income range
$51K–$66K
Median by zip