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zipcodes.pro — ZIP/59866

59866

ZIP 59866 is Saint Regis, Montana, mostly in Mineral County; area code 406; Mountain time.

Type
Standard
Time zone
America/Denver
County
Mineral +1 more
Metro area
Missoula, MT
Population
1,161
Coordinates
47.3429, -115.1204
☼ Live from 59866 — Saint Regis, MT

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Where 59866 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 59866
  • 🔢 Type 59866 into a pocket calculator and turn it upside down: ggBGS — not quite a word, sorry.
  • ➕ As a number, 59,866 = 2 × 37 × 809. Its digits add up to 34, a total 322 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1110100111011010
  • 🏠 Its numerical neighbours: 59865 (Saint Ignatius, MT, 53 mi away) and 59867 (Saltese, MT, 21 mi away).
  • 🔄 Backwards, 59866 becomes 66895, which is not a ZIP code at all.
  • 👥 10 other ZIP codes are made of exactly the same digits (65689, 66859, 66958, 68659, 68956, 95668, …). The farthest-flung twin is 65689 in Cabool, MO, 1,365 miles away.
  • 🧭 Farther north than 96% of all ZIP codes, and farther west than 89%.
  • 🎯974 miles northwest of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 59866 and you would come out at 47.34°S, 64.88°E — 282 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 57m of daylight. Shortest: 8h 27m.
  • 📏 At 222.4 square miles of land, 59866 is bigger than 92% of ZIP codes — room for about 169 Central Parks.
🌙 The sky over 59866 today
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🌋 Shake report
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Source: USGS.

People and housing

Population1,161This ZIP1,161
Households554This ZIP554
Housing units736This ZIP736
Median age49.3This ZIP49.3Montana40.4US 38.9
Median household income$73,462This ZIP$73,462Montana$72,509US $80,734
Median home value$343,700This ZIP$343,700Montana$375,800US $332,700
Median gross rent$888This ZIP$888Montana$1,081US $1,413
Bachelor's degree or higher40.4%This ZIP40.4%
Mean commute15.9 minThis ZIP15.9 min
Population density5.2 / sq miThis ZIP5.2 / sq mi

Business and tax activity

Business establishments36This ZIP36
Employees234This ZIP234
Annual payroll$7,053,000This ZIP$7,053,000
Tax returns filed510This ZIP510
Total adjusted gross income$28,564,000This ZIP$28,564,000

Land area

Land area222.41 sq miThis ZIP222.41 sq mi
Water area1.24 sq miThis ZIP1.24 sq mi

Counties 59866 spans

A ZIP code is a mail route and ignores county lines. Shares are by overlapping land area.

CountyShare of this ZIP
Mineral County 90.6%
Sanders County 9.4%

Other place names in 59866

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

ZIP codes near 59866

ZIPCityDistance
59842 Haugan, MT 14.9 mi
59830 De Borgia, MT 17.0 mi
59856 Paradise, MT 18.1 mi
59872 Superior, MT 19.2 mi
59859 Plains, MT 19.5 mi
59867 Saltese, MT 21.0 mi
59873 Thompson Falls, MT 23.2 mi
83802 Avery, ID 23.8 mi
83846 Mullan, ID 30.4 mi
59846 Huson, MT 31.4 mi

Find every ZIP code within 10 miles of 59866 →

Questions about this ZIP code

Where is ZIP code 59866?

59866 is in Saint Regis, Montana, in Mineral County, part of the Missoula, MT metropolitan area. Its published point location is 47.3429, -115.1204.

What county is 59866 in?

59866 spans 2 counties: Mineral County and Sanders County. Most of it falls in Mineral County, measured by overlapping land area — the county holding the most land in a ZIP code is not always the one holding the most residents.

What area code is 59866?

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

What time zone is 59866 in?

59866 uses America/Denver.

How many people live in 59866?

About 1,161 people live in ZIP code 59866, in 554 households, at 5.2 people per square mile. These are American Community Survey 5-year estimates for the ZIP Code Tabulation Area, not a headcount.

What is the median household income in 59866?

$73,462 a year, against $72,509 across Montana.

What ZIP codes are near 59866?

The closest are 59842 (14.9 mi), 59830 (17 mi), 59856 (18.1 mi), 59872 (19.2 mi) and 59859 (19.5 mi).

Is 59866 a PO Box ZIP code?

59866 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “59866 ZIP Code — Saint Regis, Montana (Mineral County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/59866

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