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zipcodes.pro — ZIP/59631

59631

ZIP 59631 is Basin, Montana, in Jefferson County; area code 406; Mountain time.

Type
Standard
Time zone
America/Denver
County
Jefferson
Metro area
Helena, MT
Population
375
Coordinates
46.2906, -112.3890
☼ Live from 59631 — Basin, MT

Weather right now

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Local time: —

Where 59631 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 59631
  • 🔢 Type 59631 into a pocket calculator and turn it upside down: IEgGS — not quite a word, sorry.
  • ➕ As a number, 59,631 = 3 × 11 × 13 × 139. Its digits add up to 24, a total 2,425 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1110100011101111
  • 🏠 Its numerical neighbours: 59626 (Helena, MT, 27 mi away) and 59632 (Boulder, MT, 20 mi away).
  • 🔄 Backwards, 59631 becomes 13695 — and that is a real ZIP code: Wanakena, NY, 1,813 miles away.
  • 👥 44 other ZIP codes are made of exactly the same digits (13659, 13695, 15639, 15693, 15936, 15963, …). The farthest-flung twin is 96531 in FPO AA, a military post office, 7,710 miles away.
  • 🧭 Farther north than 94% of all ZIP codes, and farther west than 88%.
  • 🎯826 miles northwest of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 59631 and you would come out at 46.29°S, 67.61°E — 243 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 48m of daylight. Shortest: 8h 36m.
  • 📏 At 156.4 square miles of land, 59631 is bigger than 87% of ZIP codes — room for about 119 Central Parks.
🌙 The sky over 59631 today
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🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population375This ZIP375
Households164This ZIP164
Housing units192This ZIP192
Median age51.3This ZIP51.3Montana40.4US 38.9
Median home value$235,700This ZIP$235,700Montana$375,800US $332,700
Bachelor's degree or higher27.1%This ZIP27.1%
Mean commute41.6 minThis ZIP41.6 min
Population density2.4 / sq miThis ZIP2.4 / sq mi

Business and tax activity

Business establishments9This ZIP9
Employees21This ZIP21
Annual payroll$578,000This ZIP$578,000

Land area

Land area156.44 sq miThis ZIP156.44 sq mi
Water area0.02 sq miThis ZIP0.02 sq mi

Other place names in 59631

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

ZIP codes near 59631

ZIPCityDistance
59728 Elliston, MT 15.2 mi
59638 Jefferson City, MT 17.9 mi
59722 Deer Lodge, MT 17.9 mi
59701 Butte, MT 18.2 mi
59601 Helena, MT 18.9 mi
59634 Clancy, MT 20.1 mi
59632 Boulder, MT 20.2 mi
59707 Butte, MT 21.0 mi
59748 Ramsay, MT 22.4 mi
59756 Warm Springs, MT 22.8 mi

Find every ZIP code within 10 miles of 59631 →

Questions about this ZIP code

Where is ZIP code 59631?

59631 is in Basin, Montana, in Jefferson County, part of the Helena, MT metropolitan area. Its published point location is 46.2906, -112.3890.

What county is 59631 in?

59631 lies in Jefferson County.

What area code is 59631?

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

What time zone is 59631 in?

59631 uses America/Denver.

How many people live in 59631?

About 375 people live in ZIP code 59631, in 164 households, at 2.4 people per square mile. These are American Community Survey 5-year estimates for the ZIP Code Tabulation Area, not a headcount.

What ZIP codes are near 59631?

The closest are 59728 (15.2 mi), 59638 (17.9 mi), 59722 (17.9 mi), 59701 (18.2 mi) and 59601 (18.9 mi).

Is 59631 a PO Box ZIP code?

59631 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “59631 ZIP Code — Basin, Montana (Jefferson County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/59631

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