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/15678

15678

ZIP 15678 is Rillton, Pennsylvania, in Westmoreland County; area code 724; Eastern time.

Type
Standard
Time zone
America/New_York
County
Westmoreland
Metro area
Pittsburgh, PA
Population
472
Coordinates
40.2845, -79.7258
☼ Live from 15678 — Rillton, PA

Weather right now

Asking the National Weather Service…

NEXRAD radar
Finding the nearest radar…
Local time: —

Where 15678 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 15678
  • 🔢 Type 15678 into a pocket calculator and turn it upside down: BLgSI — not quite a word, sorry.
  • ➕ As a number, 15,678 = 2 × 3 × 3 × 13 × 67. Its digits add up to 27, a total 1,806 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 11110100111110
  • 🏠 Its numerical neighbours: 15677 (Rector, PA, 28 mi away) and 15679 (Ruffs Dale, PA, 8 mi away).
  • 🔄 Backwards, 15678 becomes 87651, which is not a ZIP code at all.
  • 👥 42 other ZIP codes are made of exactly the same digits (15687, 16875, 17568, 17856, 17865, 18657, …). The farthest-flung twin is 85716 in Tucson, AZ, 1,814 miles away.
  • 🧭 Farther north than 59% of all ZIP codes, and farther east than 75%.
  • 🎯996 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 15678 and you would come out at 40.28°S, 100.27°E — 1,041 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 03m of daylight. Shortest: 9h 18m.
  • 📏 At 1.3 square miles of land, 15678 is bigger than 9% of ZIP codes — room for about 1.0 Central Parks.
🌙 The sky over 15678 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population472This ZIP472
Households234This ZIP234
Housing units251This ZIP251
Median age40.9This ZIP40.9Pennsylvania40.9US 38.9
Median household income$66,389This ZIP$66,389Pennsylvania$77,971US $80,734
Median home value$160,300This ZIP$160,300Pennsylvania$254,500US $332,700
Bachelor's degree or higher21.7%This ZIP21.7%
Mean commute27.0 minThis ZIP27.0 min
Population density357.3 / sq miThis ZIP357.3 / sq mi

Business and tax activity

Business establishments9This ZIP9
Employees35This ZIP35
Annual payroll$2,705,000This ZIP$2,705,000
Tax returns filed290This ZIP290
Total adjusted gross income$17,905,000This ZIP$17,905,000

Land area

Land area1.32 sq miThis ZIP1.32 sq mi
Water area0.00 sq mi

ZIP codes near 15678

ZIPCityDistance
15637 Herminie, PA 1.8 mi
15691 Wendel, PA 2.4 mi
15642 Irwin, PA 2.4 mi
15625 Darragh, PA 2.6 mi
15663 Madison, PA 3.3 mi
15660 Lowber, PA 3.6 mi
15083 Sutersville, PA 3.6 mi
15617 Arona, PA 3.9 mi
15018 Buena Vista, PA 3.9 mi
15028 Coulters, PA 3.9 mi

Find every ZIP code within 10 miles of 15678 →

Questions about this ZIP code

Where is ZIP code 15678?

15678 is in Rillton, Pennsylvania, in Westmoreland County, part of the Pittsburgh, PA metropolitan area. Its published point location is 40.2845, -79.7258.

What county is 15678 in?

15678 lies in Westmoreland County.

What area code is 15678?

Rillton uses area code 724, from NANPA's telephone records.

What time zone is 15678 in?

15678 uses America/New_York.

How many people live in 15678?

About 472 people live in ZIP code 15678, in 234 households, at 357.3 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 15678?

$66,389 a year, against $77,971 across Pennsylvania.

What ZIP codes are near 15678?

The closest are 15637 (1.8 mi), 15691 (2.4 mi), 15642 (2.4 mi), 15625 (2.6 mi) and 15663 (3.3 mi).

Is 15678 a PO Box ZIP code?

15678 is a standard ZIP code. A normal ZIP code with street delivery.

Download or cite

Cite this page

zipcodes.pro. “15678 ZIP Code — Rillton, Pennsylvania (Westmoreland County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/15678

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/15678.json

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