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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/83877

83877

ZIP 83877 is in Post Falls, Idaho, in Kootenai County; area codes 208 and 986; Pacific time. Post Falls has 2 ZIP codes; the other is 83854.

Type
No street area
Time zone
America/Los_Angeles
County
Kootenai
Metro area
Coeur d'Alene, ID
Coordinates
47.7180, -116.9516

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 83854, whose figures describe that area — not this ZIP code.

☼ Live from 83877 — Post Falls, ID

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Where 83877 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 83877
  • 🔢 Type 83877 into a pocket calculator and turn it upside down: LLBEB — not quite a word, sorry.
  • ➕ As a number, 83,877 = 3 × 73 × 383. Its digits add up to 33, a total 456 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10100011110100101
  • 🏠 Its numerical neighbours: 83876 (Worley, ID, 18 mi away) and 84001 (Altamont, UT, 607 mi away). Next door on paper, a road trip in real life.
  • 🔄 Backwards, 83877 becomes 77838 — and that is a real ZIP code: Chriesman, TX, 1,593 miles away.
  • 👥 11 other ZIP codes are made of exactly the same digits (37878, 37887, 38778, 38877, 77388, 77838, …). The farthest-flung twin is 37878 in Tallassee, TN, 1,878 miles away.
  • 🧭 Farther north than 97% of all ZIP codes, and farther west than 89%.
  • 🎯1,062 miles northwest of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 83877 and you would come out at 47.72°S, 63.05°E — 347 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 16h 00m of daylight. Shortest: 8h 24m.
🌙 The sky over 83877 today
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🌋 Shake report
  • Checking the USGS…

Source: USGS.

Business and tax activity

Business establishments14This ZIP14
Employees154This ZIP154
Annual payroll$8,215,000This ZIP$8,215,000

Land area

ZIP codes near 83877

ZIPCityDistance
83854 Post Falls, ID 1.3 mi
83815 Coeur d'Alene, ID 7.5 mi
99025 Newman Lake, WA 7.8 mi
99019 Liberty Lake, WA 8.0 mi
99027 Otis Orchards, WA 8.2 mi
83816 Coeur d'Alene, ID 8.4 mi
83858 Rathdrum, ID 9.7 mi
99016 Greenacres, WA 11.5 mi
99216 Spokane, WA 12.5 mi
99037 Veradale, WA 12.9 mi

Find every ZIP code within 10 miles of 83877 →

Questions about this ZIP code

Where is ZIP code 83877?

83877 is in Post Falls, Idaho, in Kootenai County, part of the Coeur d'Alene, ID metropolitan area. Its published point location is 47.7180, -116.9516.

What county is 83877 in?

83877 lies in Kootenai County.

What area code is 83877?

Post Falls uses area codes 208 and 986, from NANPA's telephone records.

What time zone is 83877 in?

83877 uses America/Los_Angeles.

What ZIP codes are near 83877?

The closest are 83854 (1.3 mi), 83815 (7.5 mi), 99025 (7.8 mi), 99019 (8 mi) and 99027 (8.2 mi).

Is 83877 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. “83877 ZIP Code — Post Falls, Idaho (Kootenai County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/83877

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