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

ZIP stands for Zone Improvement Plan. The codes went live on July 1, 1963.The lowest ZIP code is 00501 — the IRS in Holtsville, New York.The highest ZIP code is 99950, in Ketchikan, Alaska.Type 07734 into a calculator and turn it upside down: hELLO. It is Keansburg, New Jersey.12345 belongs to one company: General Electric in Schenectady, New York.The first digit is a region: 0 is New England and New Jersey, 9 is the West Coast, Alaska and Hawaii.Mr. ZIP, the cartoon mailman, was the mascot that sold the idea to America.ZIP+4 arrived in 1983 and can narrow a ZIP down to one side of one block.A ZIP code is a mail route, not a place: plenty of them cross county and even state lines.Play ZIP Hunt: guess the secret ZIP code of the day in six tries.
zipcodes.pro — ZIP/18043

18043

ZIP 18043 is in Easton, Pennsylvania, in Northampton County; area codes 484, 610 and 835; Eastern time. Easton has 5 ZIP codes; the others are 18040, 18042, 18044 and 18045.

Type
No street area
Time zone
America/New_York
County
Northampton
Coordinates
40.6884, -75.2207

The Census map gives this ZIP code no delivery area of its own, which usually means it serves post office boxes, a single organization or a post office rather than streets of homes.

This ZIP code has no Census tabulation area of its own. Its point falls inside ZCTA 18042, whose figures describe that area — not this ZIP code.

☼ Live from 18043 — Easton, PA

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Where 18043 is

This ZIP code has no Census tabulation area, so there is no boundary to draw — the marker is its published point location.

★ Weird and wonderful facts about 18043
  • 🔢 Type 18043 into a pocket calculator and turn it upside down: EhOBI — not quite a word, sorry.
  • ➕ 18043 is a prime number. It cannot be divided by anything except 1 and itself. Its digits add up to 16, a total 1,922 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 100011001111011
  • 🏠 Its numerical neighbours: 18042 (Easton, PA, 3 mi away) and 18044 (Easton, PA, 0 mi away).
  • 🔄 Backwards, 18043 becomes 34081, which is not a ZIP code at all.
  • 👥 54 other ZIP codes are made of exactly the same digits (01438, 01834, 01843, 03814, 03841, 08314, …). The farthest-flung twin is 84013 in Cedar Valley, UT, 1,923 miles away.
  • 🧭 Farther north than 63% of all ZIP codes, and farther east than 87%.
  • 🎯1,229 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 18043 and you would come out at 40.69°S, 104.78°E — 862 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 05m of daylight. Shortest: 9h 15m.
🌙 The sky over 18043 today
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🌋 Shake report
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Source: USGS.

Business and tax activity

Business establishments6This ZIP6
Employees106This ZIP106
Annual payroll$12,161,000This ZIP$12,161,000

Land area

ZIP codes near 18043

ZIPCityDistance
18044 Easton, PA 0.0 mi
18045 Easton, PA 2.9 mi
18042 Easton, PA 3.1 mi
18040 Easton, PA 4.0 mi
18085 Tatamy, PA 4.1 mi
08865 Phillipsburg, NJ 4.1 mi
18083 Stockertown, PA 5.2 mi
18020 Bethlehem, PA 5.7 mi
08886 Stewartsville, NJ 6.3 mi
18063 Martins Creek, PA 6.8 mi

Find every ZIP code within 10 miles of 18043 →

Questions about this ZIP code

Where is ZIP code 18043?

18043 is in Easton, Pennsylvania, in Northampton County, part of the Allentown-Bethlehem-Easton, PA-NJ metropolitan area. Its published point location is 40.6884, -75.2207.

What county is 18043 in?

18043 lies in Northampton County.

What area code is 18043?

Easton uses area codes 484, 610 and 835, from NANPA's telephone records.

What time zone is 18043 in?

18043 uses America/New_York.

What ZIP codes are near 18043?

The closest are 18044 (0 mi), 18045 (2.9 mi), 18042 (3.1 mi), 18040 (4 mi) and 18085 (4.1 mi).

Is 18043 a PO Box ZIP code?

Possibly. The Census map gives this ZIP code no delivery area of its own, which usually means it serves post office boxes, a single organization or a post office rather than streets of homes.

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Cite this page

zipcodes.pro. “18043 ZIP Code — Easton, Pennsylvania (Northampton County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/18043

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/18043.json

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