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/59903

59903

ZIP 59903 is in Kalispell, Montana, in Flathead County; area code 406; Mountain time. Kalispell has 3 ZIP codes; the others are 59901 and 59904.

Type
No street area
Time zone
America/Denver
County
Flathead
Metro area
Kalispell, MT
Coordinates
48.2237, -114.4296

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 59901, whose figures describe that area — not this ZIP code.

☼ Live from 59903 — Kalispell, MT

Weather right now

Asking the National Weather Service…

NEXRAD radar
Finding the nearest radar…
Local time: —

Where 59903 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 59903
  • 🔢 Type 59903 into a pocket calculator and turn it upside down: EOGGS — not quite a word, sorry.
  • ➕ As a number, 59,903 = 37 × 1619. Its digits add up to 26, a total 2,038 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1110100111111111
  • 🏠 Its numerical neighbours: 59901 (Kalispell, MT, 1 mi away) and 59904 (Kalispell, MT, 8 mi away).
  • 🔄 Backwards, 59903 becomes 30995, which is not a ZIP code at all.
  • 👥 19 other ZIP codes are made of exactly the same digits (09359, 09593, 30599, 35990, 39059, 39095, …). The farthest-flung twin is 09359 in APO AE, a military post office, 4,942 miles away.
  • 🧭 Farther north than 98% of all ZIP codes, and farther west than 88%.
  • 🎯975 miles northwest of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 59903 and you would come out at 48.22°S, 65.57°E — 225 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 16h 05m of daylight. Shortest: 8h 20m.
🌙 The sky over 59903 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

Business and tax activity

Business establishments44This ZIP44
Employees357This ZIP357
Annual payroll$19,186,000This ZIP$19,186,000

Land area

ZIP codes near 59903

ZIPCityDistance
59901 Kalispell, MT 1.3 mi
59904 Kalispell, MT 8.1 mi
59932 Somers, MT 14.7 mi
59937 Whitefish, MT 15.1 mi
59920 Kila, MT 17.3 mi
59922 Lakeside, MT 18.0 mi
59912 Columbia Falls, MT 19.0 mi
59919 Hungry Horse, MT 20.2 mi
59929 Proctor, MT 21.3 mi
59926 Martin City, MT 21.8 mi

Find every ZIP code within 10 miles of 59903 →

Questions about this ZIP code

Where is ZIP code 59903?

59903 is in Kalispell, Montana, in Flathead County, part of the Kalispell, MT micropolitan area. Its published point location is 48.2237, -114.4296.

What county is 59903 in?

59903 lies in Flathead County.

What area code is 59903?

Kalispell uses area code 406, from NANPA's telephone records.

What time zone is 59903 in?

59903 uses America/Denver.

What ZIP codes are near 59903?

The closest are 59901 (1.3 mi), 59904 (8.1 mi), 59932 (14.7 mi), 59937 (15.1 mi) and 59920 (17.3 mi).

Is 59903 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.

Download or cite

Cite this page

zipcodes.pro. “59903 ZIP Code — Kalispell, Montana (Flathead County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/59903

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/59903.json

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