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ZIP codes

ZIP codes in Northampton County, Pennsylvania

Northampton County has 26 ZIP codes. 19 lie entirely inside it and 7 are shared with neighboring counties, so part of their land and their people are elsewhere. About 316,964 people live in the parts inside it (ACS 2020–2024).

By the All Map Tools Team

ZIP codes
26
With 1% or more of their land inside
Entirely inside
19
99% or more of their land
Shared with other counties
7
Most with Lehigh County (5)
Most populated ZIP
18042
45,532 people · Easton
Least populated ZIP
18035
39 people · Cherryville
Largest ZIP by land
18013
63 sq mi · Bangor

Map of the ZIP codes in Northampton County

Warren County, NJ Bucks County Carbon County Lehigh County Monroe County 18013 · Bangor · 17,597 people · 100% in the county 18014 · Bath · 12,097 people · 100% in the county 18015 · Bethlehem · 34,852 people · 65% in the county 18017 · Bethlehem · 40,640 people · 95% in the county 18018 · Bethlehem · 32,965 people · 34% in the county 18020 · Middletown · 21,204 people · 100% in the county 18032 · Catasauqua · 9,555 people · 36% in the county 18035 · Cherryville · 39 people · 100% in the county 18038 · 3,549 people · 100% in the county 18040 · Chestnut Hill · 17,256 people · 100% in the county 18042 · Easton · 45,532 people · 99.2% in the county 18045 · Palmer Heights · 30,429 people · 100% in the county 18055 · Hellertown · 12,117 people · 94% in the county 18063 · Martins Creek · 606 people · 100% in the county 18064 · Eastlawn Gardens · 26,970 people · 100% in the county 18067 · Northampton · 19,590 people · 100% in the county 18072 · Pen Argyl · 6,938 people · 100% in the county 18077 · Riegelsville · 2,203 people · 6.9% in the county 18083 · Stockertown · 489 people · 100% in the county 18085 · Tatamy · 1,175 people · 100% in the county 18086 · 229 people · 100% in the county 18088 · Cherryville · 8,488 people · 100% in the county 18091 · Wind Gap · 6,547 people · 100% in the county 18109 · Allentown · 18,446 people · 5.1% in the county 18343 · Portland · 3,637 people · 100% in the county 18351 · Portland · 546 people · 100% in the county
  • Entirely in the county (99% or more of its land)
  • Shared, mostly in this county
  • Shared, mostly in other counties
  • Neighboring counties
Open in the interactive tool

Each area is a ZIP code with its number where it fits. Hover over one to see its name.

All ZIP codes in Northampton County

26 ZIP codes in Northampton County, PA, by number
ZIP code Main city Population Land in the county Residents in the county
18013 Bangor 17,597 100% 17,597
18014 Bath 12,097 100% 12,097
18015 Bethlehem 34,852 65% ≈ 25,255
18017 Bethlehem 40,640 95% ≈ 38,506
18018 Bethlehem 32,965 34% ≈ 14,445
18020 Middletown 21,204 100% 21,204
18032 Catasauqua 9,555 36% ≈ 3,014
18035 Cherryville 39 100% 39
18038 — 3,549 100% 3,549
18040 Chestnut Hill 17,256 100% 17,256
18042 Easton 45,532 99.2% ≈ 45,502
18045 Palmer Heights 30,429 100% 30,429
18055 Hellertown 12,117 94% ≈ 11,913
18063 Martins Creek 606 100% 606
18064 Eastlawn Gardens 26,970 100% 26,970
18067 Northampton 19,590 100% 19,590
18072 Pen Argyl 6,938 100% 6,938
18077 Riegelsville 2,203 6.9% ≈ 281
18083 Stockertown 489 100% 489
18085 Tatamy 1,175 100% 1,175
18086 — 229 100% 229
18088 Cherryville 8,488 100% 8,488
18091 Wind Gap 6,547 100% 6,547
18109 Allentown 18,446 5.1% ≈ 662
18343 Portland 3,637 100% 3,637
18351 Portland 546 100% 546

ZIP codes shared with other counties

These 7 ZIP codes have part of their land in another county. The first figure is the share of their land in Northampton County; then, where the rest lies.

Cities and prefixes

By main city (the city, town or CDP each ZIP shares the most land with), the ones with the most are Bethlehem (3), Cherryville (2), Portland (2), Allentown (1), Bangor (1), and Bath (1); 20 places in all.

They start with 3 different three-digit prefixes, one per USPS sorting center: 180, 181, and 183.

Neighboring counties

Each one with its ZIP codes. Those without a page of their own open in the tool.

Tools for this county

ZIP codes by county or city The same ZIP codes on an interactive map, with the list as CSV or to copy County map with cities Its cities, towns and CDPs with their population ZIP codes in a radius The ZIP codes within 10 miles of its center, or any distance you like

Sources

  • U.S. Census Bureau, 2020 ZCTA to County, ZCTA to Place and ZCTA to Census Tract Relationship Files (and the 2022 County Subdivision to ZCTA file for Connecticut). Public domain.
  • U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, table B01003 (population of each ZIP code, census tract and Connecticut town). Public domain.
  • U.S. Census Bureau, Vintage 2025 Population Estimates (county population) and 2025 Gazetteer Files (land area and interior point of each ZIP code). Public domain.
  • U.S. Census Bureau, Cartographic Boundary Files: ZCTAs 2020 and counties 2025, 1:500,000; county adjacency file 2025. Public domain.

How we count. ZIP codes here are the Census Bureau’s ZIP Code Tabulation Areas (ZCTAs), the areas it draws to match USPS ZIP codes; ZIPs with no area of their own (PO boxes, single buildings) aren’t included. A ZIP can cross county lines: “Land in the county” is the exact share of its land inside, from the Census relationship files. “Residents in the county” is the whole ZIP for those entirely inside; for shared ones it’s an estimate, spreading the people of each census tract over the land it shares with the ZIP. Population: ACS 2020–2024. Methodology.

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