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/18078

18078

ZIP 18078 is Schnecksville, Pennsylvania, in Lehigh County; area codes 484, 610 and 835; Eastern time.

Type
Standard
Time zone
America/New_York
County
Lehigh
Population
7,857
Coordinates
40.6709, -75.6207
☼ Live from 18078 — Schnecksville, PA

Weather right now

Asking the National Weather Service…

NEXRAD radar
Finding the nearest radar…
Local time: —

Where 18078 is

Approximate ZIP boundary (Census ZCTA 2020). ZIP codes are mail routes, not areas, so the shape shown is the Census tabulation area that approximates it.

★ Weird and wonderful facts about 18078
  • 🔢 Type 18078 into a pocket calculator and turn it upside down: BLOBI — not quite a word, sorry.
  • ➕ As a number, 18,078 = 2 × 3 × 23 × 131. Its digits add up to 24, a total 2,425 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 100011010011110
  • 🏠 Its numerical neighbours: 18077 (Riegelsville, PA, 21 mi away) and 18079 (Slatedale, PA, 5 mi away).
  • 🔄 Backwards, 18078 becomes 87081, which is not a ZIP code at all.
  • 👥 17 other ZIP codes are made of exactly the same digits (01887, 07188, 07881, 08817, 08871, 17088, …). The farthest-flung twin is 87801 in Socorro, NM, 1,780 miles away.
  • 🧭 Farther north than 63% of all ZIP codes, and farther east than 86%.
  • 🎯1,209 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 18078 and you would come out at 40.67°S, 104.38°E — 877 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 05m of daylight. Shortest: 9h 15m.
  • 📏 At 15.6 square miles of land, 18078 is bigger than 33% of ZIP codes — room for about 12 Central Parks.
🌙 The sky over 18078 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population7,857This ZIP7,857
Households2,794This ZIP2,794
Housing units2,822This ZIP2,822
Median age38.8This ZIP38.8Pennsylvania40.9US 38.9
Median household income$120,857This ZIP$120,857Pennsylvania$77,971US $80,734
Median home value$385,400This ZIP$385,400Pennsylvania$254,500US $332,700
Median gross rent$1,238This ZIP$1,238Pennsylvania$1,209US $1,413
Bachelor's degree or higher45.4%This ZIP45.4%
Mean commute28.1 minThis ZIP28.1 min
Population density505.2 / sq miThis ZIP505.2 / sq mi

Business and tax activity

Business establishments155This ZIP155
Employees1,665This ZIP1,665
Annual payroll$74,928,000This ZIP$74,928,000
Tax returns filed3,850This ZIP3,850
Total adjusted gross income$412,037,000This ZIP$412,037,000

Land area

Land area15.55 sq miThis ZIP15.55 sq mi
Water area0.10 sq miThis ZIP0.10 sq mi

Other place names in 18078

Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.

ZIP codes near 18078

ZIPCityDistance
18065 Neffs, PA 2.0 mi
18069 Orefield, PA 3.2 mi
18037 Coplay, PA 3.9 mi
18080 Slatington, PA 4.2 mi
18079 Slatedale, PA 5.4 mi
18059 Laurys Station, PA 5.5 mi
18053 Germansville, PA 5.5 mi
18104 Allentown, PA 5.6 mi
18051 Fogelsville, PA 5.7 mi
18195 Allentown, PA 6.0 mi

Find every ZIP code within 10 miles of 18078 →

Questions about this ZIP code

Where is ZIP code 18078?

18078 is in Schnecksville, Pennsylvania, in Lehigh County, part of the Allentown-Bethlehem-Easton, PA-NJ metropolitan area. Its published point location is 40.6709, -75.6207.

What county is 18078 in?

18078 lies in Lehigh County.

What area code is 18078?

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

What time zone is 18078 in?

18078 uses America/New_York.

How many people live in 18078?

About 7,857 people live in ZIP code 18078, in 2,794 households, at 505.2 people per square mile. These are American Community Survey 5-year estimates for the ZIP Code Tabulation Area, not a headcount.

What is the median household income in 18078?

$120,857 a year, against $77,971 across Pennsylvania.

What ZIP codes are near 18078?

The closest are 18065 (2 mi), 18069 (3.2 mi), 18037 (3.9 mi), 18080 (4.2 mi) and 18079 (5.4 mi).

Is 18078 a PO Box ZIP code?

18078 is a standard ZIP code. A normal ZIP code with street delivery.

Download or cite

Cite this page

zipcodes.pro. “18078 ZIP Code — Schnecksville, Pennsylvania (Lehigh County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/18078

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/18078.json

Underlying data is public domain or openly licensed — sources, vintages and licences.