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zipcodes.pro — ZIP/58631

58631

ZIP 58631 is Glen Ullin, North Dakota, mostly in Morton County; area code 701; Central time.

Type
Standard
Time zone
America/North_Dakota/New_Salem
County
Morton +2 more
Metro area
Bismarck, ND
Population
953
Coordinates
46.7986, -101.8370
☼ Live from 58631 — Glen Ullin, ND

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Local time: —

Where 58631 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 58631
  • 🔢 Type 58631 into a pocket calculator and turn it upside down: IEgBS — not quite a word, sorry.
  • ➕ 58631 is a prime number. It cannot be divided by anything except 1 and itself. Its digits add up to 23, a total 2,533 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1110010100000111
  • 🏠 Its numerical neighbours: 58630 (Gladstone, ND, 36 mi away) and 58632 (Golva, ND, 101 mi away).
  • 🔄 Backwards, 58631 becomes 13685 — and that is a real ZIP code: Sackets Harbor, NY, 1,260 miles away.
  • 👥 49 other ZIP codes are made of exactly the same digits (13658, 13685, 13856, 13865, 15368, 15638, …). The farthest-flung twin is 31568 in White Oak, GA, 1,524 miles away.
  • 🧭 Farther north than 95% of all ZIP codes, and farther west than 81%.
  • 🎯509 miles north of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 58631 and you would come out at 46.80°S, 78.16°E — 407 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 52m of daylight. Shortest: 8h 32m.
  • 📏 At 370.3 square miles of land, 58631 is bigger than 96% of ZIP codes — room for about 281 Central Parks.
🌙 The sky over 58631 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population953This ZIP953
Households447This ZIP447
Housing units745This ZIP745
Median age52.8This ZIP52.8North Dakota35.9US 38.9
Median household income$58,036This ZIP$58,036North Dakota$76,657US $80,734
Median home value$133,100This ZIP$133,100North Dakota$249,900US $332,700
Median gross rent$775This ZIP$775North Dakota$954US $1,413
Bachelor's degree or higher20.5%This ZIP20.5%
Mean commute30.7 minThis ZIP30.7 min
Population density2.6 / sq miThis ZIP2.6 / sq mi

Business and tax activity

Business establishments34This ZIP34
Employees248This ZIP248
Annual payroll$14,189,000This ZIP$14,189,000
Tax returns filed490This ZIP490
Total adjusted gross income$38,162,000This ZIP$38,162,000

Land area

Land area370.34 sq miThis ZIP370.34 sq mi
Water area2.71 sq miThis ZIP2.71 sq mi

Counties 58631 spans

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

CountyShare of this ZIP
Morton County 61.6%
Grant County 29.6%
Mercer County 8.8%

Other place names in 58631

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

ZIP codes near 58631

ZIPCityDistance
58638 Hebron, ND 12.6 mi
58520 Almont, ND 15.4 mi
58563 New Salem, ND 20.0 mi
58652 Richardton, ND 20.2 mi
58533 Elgin, ND 28.0 mi
58562 New Leipzig, ND 31.3 mi
58656 Taylor, ND 31.6 mi
58641 Lefor, ND 32.1 mi
58523 Beulah, ND 32.3 mi
58580 Zap, ND 32.8 mi

Find every ZIP code within 10 miles of 58631 →

Questions about this ZIP code

Where is ZIP code 58631?

58631 is in Glen Ullin, North Dakota, in Morton County, part of the Bismarck, ND metropolitan area. Its published point location is 46.7986, -101.8370.

What county is 58631 in?

58631 spans 3 counties: Morton County, Grant County and Mercer County. Most of it falls in Morton 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 58631?

Glen Ullin uses area code 701, from NANPA's telephone records.

What time zone is 58631 in?

58631 uses America/North_Dakota/New_Salem.

How many people live in 58631?

About 953 people live in ZIP code 58631, in 447 households, at 2.6 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 58631?

$58,036 a year, against $76,657 across North Dakota.

What ZIP codes are near 58631?

The closest are 58638 (12.6 mi), 58520 (15.4 mi), 58563 (20 mi), 58652 (20.2 mi) and 58533 (28 mi).

Is 58631 a PO Box ZIP code?

58631 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “58631 ZIP Code — Glen Ullin, North Dakota (Morton County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/58631

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/58631.json

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