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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/16405

16405

ZIP 16405 is Columbus, Pennsylvania, in Warren County; area codes 814 and 582; Eastern time.

Type
Standard
Time zone
America/New_York
County
Warren
Metro area
Warren, PA
Population
514
Coordinates
41.9380, -79.5335
☼ Live from 16405 — Columbus, PA

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Local time: —

Where 16405 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 16405
  • 🔢 Type 16405 into a pocket calculator and turn it upside down: SOhgI — not quite a word, sorry.
  • ➕ As a number, 16,405 = 5 × 17 × 193. Its digits add up to 16, a total 1,922 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 100000000010101
  • 🏠 Its numerical neighbours: 16404 (Centerville, PA, 20 mi away) and 16406 (Conneautville, PA, 45 mi away).
  • 🔄 Backwards, 16405 becomes 50461 — and that is a real ZIP code: Osage, IA, 681 miles away.
  • 👥 78 other ZIP codes are made of exactly the same digits (01546, 01564, 05146, 05461, 05641, 06145, …). The farthest-flung twin is 56140 in Ihlen, MN, 861 miles away.
  • 🧭 Farther north than 75% of all ZIP codes, and farther east than 75%.
  • 🎯1,003 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 16405 and you would come out at 41.94°S, 100.47°E — 1,092 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 14m of daylight. Shortest: 9h 07m.
  • 📏 At 18.8 square miles of land, 16405 is bigger than 36% of ZIP codes — room for about 14 Central Parks.
🌙 The sky over 16405 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population514This ZIP514
Households204This ZIP204
Housing units221This ZIP221
Median age49.8This ZIP49.8Pennsylvania40.9US 38.9
Median household income$73,125This ZIP$73,125Pennsylvania$77,971US $80,734
Median home value$159,400This ZIP$159,400Pennsylvania$254,500US $332,700
Bachelor's degree or higher11.8%This ZIP11.8%
Mean commute23.8 minThis ZIP23.8 min
Population density27.3 / sq miThis ZIP27.3 / sq mi

Business and tax activity

Business establishments7This ZIP7
Employees32This ZIP32
Annual payroll$488,000This ZIP$488,000
Tax returns filed300This ZIP300
Total adjusted gross income$14,572,000This ZIP$14,572,000

Land area

Land area18.84 sq miThis ZIP18.84 sq mi
Water area0.00 sq mi

Other place names in 16405

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

ZIP codes near 16405

ZIPCityDistance
16402 Bear Lake, PA 3.6 mi
16436 Spring Creek, PA 5.4 mi
14758 Niobe, NY 6.7 mi
16407 Corry, PA 7.9 mi
14767 Panama, NY 8.3 mi
16416 Garland, PA 8.3 mi
14724 Clymer, NY 10.2 mi
16350 Sugar Grove, PA 10.3 mi
16413 Elgin, PA 11.1 mi
16340 Pittsfield, PA 11.3 mi

Find every ZIP code within 10 miles of 16405 →

Questions about this ZIP code

Where is ZIP code 16405?

16405 is in Columbus, Pennsylvania, in Warren County, part of the Warren, PA micropolitan area. Its published point location is 41.9380, -79.5335.

What county is 16405 in?

16405 lies in Warren County.

What area code is 16405?

Columbus uses area codes 814 and 582, from NANPA's telephone records.

What time zone is 16405 in?

16405 uses America/New_York.

How many people live in 16405?

About 514 people live in ZIP code 16405, in 204 households, at 27.3 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 16405?

$73,125 a year, against $77,971 across Pennsylvania.

What ZIP codes are near 16405?

The closest are 16402 (3.6 mi), 16436 (5.4 mi), 14758 (6.7 mi), 16407 (7.9 mi) and 14767 (8.3 mi).

Is 16405 a PO Box ZIP code?

16405 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “16405 ZIP Code — Columbus, Pennsylvania (Warren County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/16405

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