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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/58503

58503

ZIP 58503 is in Bismarck, North Dakota, in Burleigh County; area code 701; Central time. Bismarck has 7 ZIP codes in all.

Type
Standard
Time zone
America/Chicago
County
Burleigh
Metro area
Bismarck, ND
Population
37,683
Coordinates
46.9064, -100.7522
☼ Live from 58503 — Bismarck, ND

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Where 58503 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 58503
  • 🔢 Type 58503 into a pocket calculator and turn it upside down: EOSBS — not quite a word, sorry.
  • ➕ As a number, 58,503 = 3 × 19501. Its digits add up to 21, a total 2,594 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1110010010000111
  • 🏠 Its numerical neighbours: 58502 (Bismarck, ND, 4 mi away) and 58504 (Bismarck, ND, 12 mi away).
  • 🔄 Backwards, 58503 becomes 30585, which is not a ZIP code at all.
  • 👥 38 other ZIP codes are made of exactly the same digits (03585, 03855, 05358, 05853, 08535, 08553, …). The farthest-flung twin is 03855 in New Durham, NH, 1,452 miles away.
  • 🧭 Farther north than 95% of all ZIP codes, and farther west than 80%.
  • 🎯501 miles north of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 58503 and you would come out at 46.91°S, 79.25°E — 449 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 53m of daylight. Shortest: 8h 31m.
  • 📏 At 135.6 square miles of land, 58503 is bigger than 84% of ZIP codes — room for about 103 Central Parks.
🌙 The sky over 58503 today
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Source: USGS.

People and housing

Population37,683This ZIP37,683
Households15,358This ZIP15,358
Housing units16,095This ZIP16,095
Median age39.8This ZIP39.8North Dakota35.9US 38.9
Median household income$102,333This ZIP$102,333North Dakota$76,657US $80,734
Median home value$393,700This ZIP$393,700North Dakota$249,900US $332,700
Median gross rent$1,132This ZIP$1,132North Dakota$954US $1,413
Bachelor's degree or higher48.4%This ZIP48.4%
Mean commute18.4 minThis ZIP18.4 min
Population density278.0 / sq miThis ZIP278.0 / sq mi

Business and tax activity

Business establishments952This ZIP952
Employees11,886This ZIP11,886
Annual payroll$681,901,000This ZIP$681,901,000
Tax returns filed18,260This ZIP18,260
Total adjusted gross income$2,153,727,000This ZIP$2,153,727,000

Land area

Land area135.57 sq miThis ZIP135.57 sq mi
Water area2.29 sq miThis ZIP2.29 sq mi

Other place names in 58503

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

ZIP codes near 58503

ZIPCityDistance
58502 Bismarck, ND 3.5 mi
58505 Bismarck, ND 6.1 mi
58501 Bismarck, ND 6.8 mi
58506 Bismarck, ND 6.9 mi
58507 Bismarck, ND 6.9 mi
58521 Baldwin, ND 9.2 mi
58504 Bismarck, ND 11.8 mi
58558 Menoken, ND 12.2 mi
58554 Mandan, ND 14.0 mi
58579 Wilton, ND 18.9 mi

Find every ZIP code within 10 miles of 58503 →

Questions about this ZIP code

Where is ZIP code 58503?

58503 is in Bismarck, North Dakota, in Burleigh County, part of the Bismarck, ND metropolitan area. Its published point location is 46.9064, -100.7522.

What county is 58503 in?

58503 lies in Burleigh County.

What area code is 58503?

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

What time zone is 58503 in?

58503 uses America/Chicago.

How many people live in 58503?

About 37,683 people live in ZIP code 58503, in 15,358 households, at 278.0 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 58503?

$102,333 a year, against $76,657 across North Dakota.

What ZIP codes are near 58503?

The closest are 58502 (3.5 mi), 58505 (6.1 mi), 58501 (6.8 mi), 58506 (6.9 mi) and 58507 (6.9 mi).

Is 58503 a PO Box ZIP code?

58503 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “58503 ZIP Code — Bismarck, North Dakota (Burleigh County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/58503

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