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/19331

19331

ZIP 19331 is in Concordville, Pennsylvania, in Delaware County; Eastern time. Concordville has 3 ZIP codes; the others are 19339 and 19340.

Type
No street area
Time zone
America/New_York
County
Delaware
Coordinates
39.8823, -75.5165

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 19342, whose figures describe that area — not this ZIP code.

☼ Live from 19331 — Concordville, PA

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Local time: —

Where 19331 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 19331
  • 🔢 Type 19331 into a pocket calculator and turn it upside down: IEEGI — not quite a word, sorry.
  • ➕ As a number, 19,331 = 13 × 1487. Its digits add up to 17, a total 2,133 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 100101110000011
  • 🏠 Its numerical neighbours: 19330 (Cochranville, PA, 21 mi away) and 19333 (Devon, PA, 12 mi away).
  • 🔄 Backwards, 19331 becomes 13391, which is not a ZIP code at all.
  • 👥 14 other ZIP codes are made of exactly the same digits (11933, 13139, 13319, 19133, 31139, 31193, …). The farthest-flung twin is 93311 in Bakersfield, CA, 2,391 miles away.
  • 🧭 Farther north than 55% of all ZIP codes, and farther east than 86%.
  • 🎯1,220 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 19331 and you would come out at 39.88°S, 104.48°E — 839 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 00m of daylight. Shortest: 9h 20m.
🌙 The sky over 19331 today
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🌋 Shake report
  • Checking the USGS…

Source: USGS.

Business and tax activity

Business establishments28This ZIP28
Employees763This ZIP763
Annual payroll$77,439,000This ZIP$77,439,000

Land area

ZIP codes near 19331

ZIPCityDistance
19340 Concordville, PA 0.3 mi
19373 Thornton, PA 1.6 mi
19342 Glen Mills, PA 2.0 mi
19060 Garnet Valley, PA 2.5 mi
19017 Chester Heights, PA 2.9 mi
19319 Cheyney, PA 3.1 mi
19395 Westtown, PA 3.8 mi
19052 Lenni, PA 3.9 mi
19810 Wilmington, DE 4.4 mi
19014 Aston, PA 4.6 mi

Find every ZIP code within 10 miles of 19331 →

Questions about this ZIP code

Where is ZIP code 19331?

19331 is in Concordville, Pennsylvania, in Delaware County, part of the Philadelphia-Camden-Wilmington, PA-NJ-DE-MD metropolitan area. Its published point location is 39.8823, -75.5165.

What county is 19331 in?

19331 lies in Delaware County.

What time zone is 19331 in?

19331 uses America/New_York.

What ZIP codes are near 19331?

The closest are 19340 (0.3 mi), 19373 (1.6 mi), 19342 (2 mi), 19060 (2.5 mi) and 19017 (2.9 mi).

Is 19331 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. “19331 ZIP Code — Concordville, Pennsylvania (Delaware County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/19331

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/19331.json

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