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/15420

15420

ZIP 15420 is Cardale, Pennsylvania, in Fayette County; area codes 724 and 878; Eastern time.

Type
Standard
Time zone
America/New_York
County
Fayette
Metro area
Pittsburgh, PA
Population
129
Coordinates
39.9612, -79.8643
☼ Live from 15420 — Cardale, PA

Weather right now

Asking the National Weather Service…

NEXRAD radar
Finding the nearest radar…
Local time: —

Where 15420 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 15420
  • 🔢 Type 15420 into a pocket calculator and turn it upside down: OZhSI — not quite a word, sorry.
  • ➕ As a number, 15,420 = 2 × 2 × 3 × 5 × 257. Its digits add up to 12, a total 940 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 11110000111100
  • 🏠 Its numerical neighbours: 15419 (California, PA, 7 mi away) and 15421 (Chalk Hill, PA, 16 mi away).
  • 🔄 Backwards, 15420 becomes 02451 — and that is a real ZIP code: Waltham, MA, 478 miles away.
  • 👥 73 other ZIP codes are made of exactly the same digits (01245, 01254, 01452, 01524, 01542, 02145, …). The farthest-flung twin is 51240 in Inwood, IA, 886 miles away.
  • 🧭 Farther north than 56% of all ZIP codes, and farther east than 74%.
  • 🎯990 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 15420 and you would come out at 39.96°S, 100.14°E — 1,037 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 01m of daylight. Shortest: 9h 20m.
  • 📏 At 0.480 square miles of land, 15420 is bigger than 5% of ZIP codes — about 232 football fields.
🌙 The sky over 15420 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population129This ZIP129
Households101This ZIP101
Housing units101This ZIP101
Median age56.3This ZIP56.3Pennsylvania40.9US 38.9
Median household income$81,875This ZIP$81,875Pennsylvania$77,971US $80,734
Bachelor's degree or higher32.9%This ZIP32.9%
Population density268.8 / sq miThis ZIP268.8 / sq mi

Business and tax activity

Business establishments3This ZIP3
Employees11This ZIP11
Annual payroll$149,000This ZIP$149,000

Land area

Land area0.48 sq miThis ZIP0.48 sq mi
Water area0.01 sq miThis ZIP0.01 sq mi

ZIP codes near 15420

ZIPCityDistance
15475 Republic, PA 0.9 mi
15435 Fairbank, PA 1.5 mi
15415 Brier Hill, PA 1.5 mi
15413 Allison, PA 1.7 mi
15468 New Salem, PA 1.8 mi
15463 Merrittstown, PA 1.8 mi
15443 Hibbs, PA 3.1 mi
15422 Chestnut Ridge, PA 3.2 mi
15447 Isabella, PA 3.7 mi
15442 Grindstone, PA 4.2 mi

Find every ZIP code within 10 miles of 15420 →

Questions about this ZIP code

Where is ZIP code 15420?

15420 is in Cardale, Pennsylvania, in Fayette County, part of the Pittsburgh, PA metropolitan area. Its published point location is 39.9612, -79.8643.

What county is 15420 in?

15420 lies in Fayette County.

What area code is 15420?

Cardale uses area codes 724 and 878, from NANPA's telephone records.

What time zone is 15420 in?

15420 uses America/New_York.

How many people live in 15420?

About 129 people live in ZIP code 15420, in 101 households, at 268.8 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 15420?

$81,875 a year, against $77,971 across Pennsylvania.

What ZIP codes are near 15420?

The closest are 15475 (0.9 mi), 15435 (1.5 mi), 15415 (1.5 mi), 15413 (1.7 mi) and 15468 (1.8 mi).

Is 15420 a PO Box ZIP code?

15420 is a standard ZIP code. A normal ZIP code with street delivery.

Download or cite

Cite this page

zipcodes.pro. “15420 ZIP Code — Cardale, Pennsylvania (Fayette County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/15420

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/15420.json

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