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/15663

15663

ZIP 15663 is Madison, Pennsylvania, in Westmoreland County; area code 724; Eastern time.

Type
Standard
Time zone
America/New_York
County
Westmoreland
Metro area
Pittsburgh, PA
Population
377
Coordinates
40.2523, -79.6796
☼ Live from 15663 — Madison, PA

Weather right now

Asking the National Weather Service…

NEXRAD radar
Finding the nearest radar…
Local time: —

Where 15663 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 15663
  • 🔢 Type 15663 into a pocket calculator and turn it upside down: EggSI — not quite a word, sorry.
  • ➕ As a number, 15,663 = 3 × 23 × 227. Its digits add up to 21, a total 2,594 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 11110100101111
  • 🏠 Its numerical neighbours: 15662 (Luxor, PA, 12 mi away) and 15664 (Mammoth, PA, 5 mi away).
  • 🔄 Backwards, 15663 becomes 36651, which is not a ZIP code at all.
  • 👥 29 other ZIP codes are made of exactly the same digits (13656, 13665, 15366, 15636, 16365, 16563, …). The farthest-flung twin is 66531 in Riley, KS, 912 miles away.
  • 🧭 Farther north than 59% of all ZIP codes, and farther east than 75%.
  • 🎯998 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 15663 and you would come out at 40.25°S, 100.32°E — 1,038 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 03m of daylight. Shortest: 9h 18m.
  • 📏 At 0.954 square miles of land, 15663 is bigger than 8% of ZIP codes — about 462 football fields.
🌙 The sky over 15663 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population377This ZIP377
Households166This ZIP166
Housing units174This ZIP174
Median age44.6This ZIP44.6Pennsylvania40.9US 38.9
Median household income$76,250This ZIP$76,250Pennsylvania$77,971US $80,734
Median home value$213,800This ZIP$213,800Pennsylvania$254,500US $332,700
Bachelor's degree or higher15.4%This ZIP15.4%
Mean commute23.9 minThis ZIP23.9 min
Population density395.2 / sq miThis ZIP395.2 / sq mi

Business and tax activity

Business establishments13This ZIP13
Employees717This ZIP717
Annual payroll$81,699,000This ZIP$81,699,000

Land area

Land area0.95 sq miThis ZIP0.95 sq mi
Water area0.00 sq mi

Other place names in 15663

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

ZIP codes near 15663

ZIPCityDistance
15625 Darragh, PA 1.3 mi
15617 Arona, PA 1.7 mi
15637 Herminie, PA 1.8 mi
15698 Yukon, PA 2.7 mi
15691 Wendel, PA 3.1 mi
15672 New Stanton, PA 3.1 mi
15678 Rillton, PA 3.3 mi
15640 Hutchinson, PA 3.4 mi
15695 Wyano, PA 3.9 mi
15611 Adamsburg, PA 4.0 mi

Find every ZIP code within 10 miles of 15663 →

Questions about this ZIP code

Where is ZIP code 15663?

15663 is in Madison, Pennsylvania, in Westmoreland County, part of the Pittsburgh, PA metropolitan area. Its published point location is 40.2523, -79.6796.

What county is 15663 in?

15663 lies in Westmoreland County.

What area code is 15663?

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

What time zone is 15663 in?

15663 uses America/New_York.

How many people live in 15663?

About 377 people live in ZIP code 15663, in 166 households, at 395.2 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 15663?

$76,250 a year, against $77,971 across Pennsylvania.

What ZIP codes are near 15663?

The closest are 15625 (1.3 mi), 15617 (1.7 mi), 15637 (1.8 mi), 15698 (2.7 mi) and 15691 (3.1 mi).

Is 15663 a PO Box ZIP code?

15663 is a standard ZIP code. A normal ZIP code with street delivery.

Download or cite

Cite this page

zipcodes.pro. “15663 ZIP Code — Madison, Pennsylvania (Westmoreland County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/15663

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/15663.json

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