Lehigh County, Pennsylvania ZIP Codes

28 ZIP Codes

Zip Code
City
Population
18102Allentown51,001
18103Allentown48,746
18104Allentown48,683
18018Bethlehem32,965
18052Whitehall29,451
18062Macungie27,110
18049Emmaus18,941
18109Allentown18,446
18036Coopersburg15,581
18031Breinigsville11,570
18080Slatington11,226
18032Catasauqua9,555
18034Center Valley9,209
18069Orefield8,515
18078Schnecksville7,857
18037Coplay7,472
18106Allentown6,226
18101Allentown6,120
18066New Tripoli6,102
18051Fogelsville3,624
18092Zionsville3,230
18053Germansville2,344
18059Laurys Station744
18087Trexlertown590
18065Neffs577
18079Slatedale303
18046East Texas201
18195Allentown0

Overview of ZIP Codes in Lehigh County

ZCTAs are geographic areas created by the US Census Bureau to approximate the delivery areas of ZIP Codes for statistical analysis. While ZCTAs use the same five-digit codes as ZIP Codes, they represent defined geographic areas that may not exactly match the mail delivery routes of ZIP Codes.
28
ZIP Codes

The data shown reflect ZCTAs from the US Census. As of 2025, there are 28 ZCTAs in Lehigh County, Pennsylvania (US Census).