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/59604

59604

ZIP 59604 is in Helena, Montana, in Lewis and Clark County; area code 406; Mountain time. Helena has 8 ZIP codes in all.

Type
No street area
Time zone
America/Denver
Metro area
Helena, MT
Coordinates
46.6672, -111.9689

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 59602, whose figures describe that area — not this ZIP code.

☼ Live from 59604 — Helena, MT

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Where 59604 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 59604
  • 🔢 Type 59604 into a pocket calculator and turn it upside down: hOgGS — not quite a word, sorry.
  • ➕ As a number, 59,604 = 2 × 2 × 3 × 4967. Its digits add up to 24, a total 2,425 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1110100011010100
  • 🏠 Its numerical neighbours: 59602 (Helena, MT, 5 mi away) and 59620 (Helena, MT, 6 mi away).
  • 🔄 Backwards, 59604 becomes 40695, which is not a ZIP code at all.
  • 👥 47 other ZIP codes are made of exactly the same digits (04956, 04965, 05469, 05649, 06459, 06495, …). The farthest-flung twin is 96450 in FPO AA, a military post office, 7,099 miles away.
  • 🧭 Farther north than 95% of all ZIP codes, and farther west than 87%.
  • 🎯821 miles northwest of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 59604 and you would come out at 46.67°S, 68.03°E — 211 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 51m of daylight. Shortest: 8h 33m.
🌙 The sky over 59604 today
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Source: USGS.

Business and tax activity

Business establishments31This ZIP31
Employees285This ZIP285
Annual payroll$21,027,000This ZIP$21,027,000

Land area

ZIP codes near 59604

ZIPCityDistance
59602 Helena, MT 5.0 mi
59625 Helena, MT 5.6 mi
59620 Helena, MT 6.1 mi
59624 Helena, MT 6.1 mi
59626 Helena, MT 6.1 mi
59623 Helena, MT 6.3 mi
59636 Fort Harrison, MT 7.7 mi
59635 East Helena, MT 10.7 mi
59601 Helena, MT 14.4 mi
59634 Clancy, MT 15.6 mi

Find every ZIP code within 10 miles of 59604 →

Questions about this ZIP code

Where is ZIP code 59604?

59604 is in Helena, Montana, in Lewis and Clark County, part of the Helena, MT metropolitan area. Its published point location is 46.6672, -111.9689.

What county is 59604 in?

59604 lies in Lewis and Clark County.

What area code is 59604?

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

What time zone is 59604 in?

59604 uses America/Denver.

What ZIP codes are near 59604?

The closest are 59602 (5 mi), 59625 (5.6 mi), 59620 (6.1 mi), 59624 (6.1 mi) and 59626 (6.1 mi).

Is 59604 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. “59604 ZIP Code — Helena, Montana (Lewis and Clark County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/59604

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