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/46401

46401

ZIP 46401 is in Gary, Indiana, in Lake County; area code 219; Central time. Gary has 8 ZIP codes in all.

Type
No street area
Time zone
America/Chicago
County
Lake
Coordinates
41.5907, -87.3199

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 46402, whose figures describe that area — not this ZIP code.

☼ Live from 46401 — Gary, IN

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Where 46401 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 46401
  • 🔢 Type 46401 into a pocket calculator and turn it upside down: IOhgh — not quite a word, sorry.
  • ➕ As a number, 46,401 = 3 × 15467. Its digits add up to 15, a total 1,657 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1011010101000001
  • 🏠 Its numerical neighbours: 46394 (Whiting, IN, 11 mi away) and 46402 (Gary, IN, 2 mi away).
  • 🔄 Backwards, 46401 becomes 10464 — and that is a real ZIP code: Bronx, NY, 704 miles away.
  • 👥 32 other ZIP codes are made of exactly the same digits (01464, 04416, 04461, 04614, 06144, 06414, …). The farthest-flung twin is 04461 in Milford, ME, 969 miles away.
  • 🧭 Farther north than 72% of all ZIP codes, and farther east than 51%.
  • 🎯602 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 46401 and you would come out at 41.59°S, 92.68°E — 1,207 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 12m of daylight. Shortest: 9h 09m.
🌙 The sky over 46401 today
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  • Checking the USGS…

Source: USGS.

Business and tax activity

Business establishments11This ZIP11
Employees476This ZIP476
Annual payroll$41,344,000This ZIP$41,344,000

Land area

ZIP codes near 46401

ZIPCityDistance
46407 Gary, IN 1.0 mi
46402 Gary, IN 2.1 mi
46404 Gary, IN 2.8 mi
46409 Gary, IN 2.9 mi
46405 Lake Station, IN 3.2 mi
46403 Gary, IN 3.5 mi
46408 Gary, IN 4.0 mi
46406 Gary, IN 4.7 mi
46342 Hobart, IN 6.3 mi
46323 Hammond, IN 6.9 mi

Find every ZIP code within 10 miles of 46401 →

Questions about this ZIP code

Where is ZIP code 46401?

46401 is in Gary, Indiana, in Lake County, part of the Chicago-Naperville-Elgin, IL-IN metropolitan area. Its published point location is 41.5907, -87.3199.

What county is 46401 in?

46401 lies in Lake County.

What area code is 46401?

Gary uses area code 219, from NANPA's telephone records.

What time zone is 46401 in?

46401 uses America/Chicago.

What ZIP codes are near 46401?

The closest are 46407 (1 mi), 46402 (2.1 mi), 46404 (2.8 mi), 46409 (2.9 mi) and 46405 (3.2 mi).

Is 46401 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. “46401 ZIP Code — Gary, Indiana (Lake County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/46401

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/46401.json

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