Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

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zipcodes.pro — STATE/PA/COUNTY/NORTHAMPTON

Northampton County, PA ZIP codes

There are 28 ZIP codes in Northampton County, PA, in 19 towns, from 18001 to 18351. The largest are 18017 (Bethlehem), 18042 (Easton) and 18045 (Easton).

The county seat is Easton.

ZIP codes
28
Towns
19
County seat
Easton
County FIPS
42095
Population
318,580
Median household income
$89,184
Land area
370 sq mi
Area codes
484, 610, 835

Northampton County ZIP codes by town

Easton (county seat)
18040, 18042, 18043, 18044, 18045

Each ZIP code is listed under the county most of its land lies in and the town the Postal Service names it for; a ZIP code's own page shows exactly how it is split.

Map of Northampton County ZIP codes

18001180021800318013180141801518016180171802018035180381804018042180431804418045180551806318064180671807218083180851808618088180911834318351

The ZIP codes of Northampton County, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Northampton County in numbers

About 318,580 people live in Northampton County, in 122,624 households, the 13th most populous of Pennsylvania's 67 counties. The median household income is $89,184 a year, 14% above the Pennsylvania median of $77,971 (US: $80,734). The median owner-occupied home is valued at $308,600 (21% above the Pennsylvania median), and median gross rent is $1,395 a month. The median age is 42.0; 34.7% of adults 25 and over hold a bachelor's degree or higher (35.2% across Pennsylvania); the average commute takes 27 minutes.

Population318,580Northampton318,580
Households122,624Northampton122,624
Median age42.0Northampton42.0Pennsylvania40.9US 38.9
Median household income$89,184Northampton$89,184Pennsylvania$77,971US $80,734
Median home value$308,600Northampton$308,600Pennsylvania$254,500US $332,700
Median gross rent$1,395Northampton$1,395Pennsylvania$1,209US $1,413
Bachelor's degree or higher34.7%Northampton34.7%Pennsylvania35.2%US 35.7%
Mean commute27.0 minNorthampton27.0 minPennsylvania26.3 minUS 26.4 min
Population density862 / sq miNorthampton862 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates. Survey estimates carry margins of error, wider for small places. Sources and methods.

Largest towns in Northampton County

Largest towns in Northampton County
TownZIP codesPopulation
Bethlehem 4 77,956
Easton 5 29,739
Northampton 1 10,400
Hellertown 1 6,118
Nazareth 1 6,043
Bangor 1 5,163
Danielsville 1 3,549
Pen Argyl 1 3,495
Wind Gap 1 3,360
Bath 1 2,864
Walnutport 1 2,085
Tatamy 1 1,464
Cherryville 1 1,159
Stockertown 1 775
Martins Creek 1 662

Population of the census place of that name where there is one, otherwise of the ZIP codes the Postal Service addresses by it. A town's ZIP codes can reach past the county line.

Neighbouring counties

Counties that share a ZIP code with Northampton County.

Not sure you are in Northampton County? What county am I in? answers from your location, near a county line included.

Every ZIP code in Northampton County, with figures

ZIP codes in Northampton County
ZIP City Type Population Median income Median home
18001 Lehigh Valley , PA No street area — — —
18002 Lehigh Valley , PA No street area — — —
18003 Lehigh Valley , PA No street area — — —
18013 Bangor , PA Standard 17,597 $78,847 $259,600
18014 Bath , PA Standard 12,097 $82,027 $288,700
18015 Bethlehem , PA Standard 34,852 $60,800 $281,700
18016 Bethlehem , PA No street area — — —
18017 Bethlehem , PA Standard 40,640 $91,173 $336,100
18020 Bethlehem , PA Standard 21,204 $126,166 $370,200
18035 Cherryville , PA Standard 39 — —
18038 Danielsville , PA Standard 3,549 $117,121 $279,700
18040 Easton , PA Standard 17,256 $107,016 $360,800
18042 Easton , PA Standard 45,532 $77,556 $230,200
18043 Easton , PA No street area — — —
18044 Easton , PA No street area — — —
18045 Easton , PA Standard 30,429 $114,528 $337,200
18055 Hellertown , PA Standard 12,117 $90,234 $324,000
18063 Martins Creek , PA Standard 606 $64,963 $239,800
18064 Nazareth , PA Standard 26,970 $103,393 $387,100
18067 Northampton , PA Standard 19,590 $93,652 $282,200
18072 Pen Argyl , PA Standard 6,938 $80,716 $253,100
18083 Stockertown , PA Standard 489 $99,688 $305,700
18085 Tatamy , PA Standard 1,175 $112,813 $281,900
18086 Treichlers , PA Standard 229 $69,179 $310,000
18088 Walnutport , PA Standard 8,488 $82,083 $252,700
18091 Wind Gap , PA Standard 6,547 $80,464 $277,600
18343 Mount Bethel , PA Standard 3,637 $80,491 $326,300
18351 Portland , PA Standard 546 $52,679 $266,900

Cite this page

zipcodes.pro. “Northampton County ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/state/pa/county/northampton

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