Northampton County, Pennsylvania ZIP codes
28 ZIP codes are in Northampton County, plus 4 that cross in from neighboring counties. It's part of the Allentown-Bethlehem-Easton, PA-NJ metro area.
- ZIP codes
- 28
- Population in these ZIPs
- 310,527
- Avg. median income
- $90,900population-weighted
- Cities & towns
- 19
Click anywhere on the map to see which ZIP code it's in.
ZIP codes in Northampton County
| ZIP code | City | Population | Median income | Typical home value |
|---|---|---|---|---|
| 18001 PO Box | Lehigh Valley | — | — | — |
| 18002 PO Box | Lehigh Valley | — | — | — |
| 18003 PO Box | Lehigh Valley | — | — | — |
| 18013 | Bangor | 17,597 | $78,847 | $318,500 |
| 18014 | Bath | 12,097 | $82,027 | $398,000 |
| 18015 | Bethlehem | 34,852 | $60,800 | $292,100 |
| 18016 PO Box | Bethlehem | — | — | — |
| 18017 | Bethlehem | 40,640 | $91,173 | $390,600 |
| 18020 | Bethlehem | 21,204 | $126,166 | $434,400 |
| 18035 | Cherryville | 39 | — | $461,800 |
| 18038 | Danielsville | 3,549 | $117,121 | $389,000 |
| 18040 | Easton | 17,256 | $107,016 | $463,400 |
| 18042 | Easton | 45,532 | $77,556 | $272,800 |
| 18043 PO Box | Easton | — | — | — |
| 18044 PO Box | Easton | — | — | — |
| 18045 | Easton | 30,429 | $114,528 | $423,200 |
| 18055 | Hellertown | 12,117 | $90,234 | $377,600 |
| 18063 | Martins Creek | 606 | $64,963 | $309,800 |
| 18064 | Nazareth | 26,970 | $103,393 | $460,600 |
| 18067 | Northampton | 19,590 | $93,652 | $353,200 |
| 18072 | Pen Argyl | 6,938 | $80,716 | $316,400 |
| 18083 | Stockertown | 489 | $99,688 | $343,700 |
| 18085 | Tatamy | 1,175 | $112,813 | $366,800 |
| 18086 | Treichlers | 229 | $69,179 | $310,000 |
| 18088 | Walnutport | 8,488 | $82,083 | $352,500 |
| 18091 | Wind Gap | 6,547 | $80,464 | $374,600 |
| 18343 | Mount Bethel | 3,637 | $80,491 | $382,400 |
| 18351 | Portland | 546 | $52,679 | $266,900 |
ZIP codes partly in Northampton County
These ZIP codes are mostly in a neighboring county but cover part of Northampton County.
| ZIP code | City | County | Population | Median income | Typical home value |
|---|---|---|---|---|---|
| 18018 | Bethlehem | Lehigh County | 32,965 | $75,417 | $298,400 |
| 18032 | Catasauqua | Lehigh County | 9,555 | $81,098 | $287,900 |
| 18077 | Riegelsville | Bucks County | 2,203 | $97,917 | $531,800 |
| 18109 | Allentown | Lehigh County | 18,446 | $58,031 | $271,300 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Cities and towns in Northampton County
Nearby counties
Frequently asked questions
How many ZIP codes are in Northampton County, Pennsylvania?
28 ZIP codes are mainly in Northampton County, and 4 more ZIP codes from neighboring areas reach partly into it.
What cities are in Northampton County?
ZIP codes in Northampton County use the city names Bangor, Bath, Bethlehem, Cherryville, Danielsville, Easton, Hellertown, Lehigh Valley, Martins Creek, Mount Bethel, Nazareth and Northampton and others.
What metro area is Northampton County in?
Northampton County is part of the Allentown-Bethlehem-Easton, PA-NJ metropolitan statistical area.