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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/59345

59345

ZIP 59345 is Powderville, Montana, mostly in Custer County; Mountain time.

Type
Standard
Time zone
America/Denver
County
Custer +1 more
Metro area
none
Population
35
Coordinates
45.8601, -105.2120
☼ Live from 59345 — Powderville, MT

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Where 59345 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 59345
  • 🔢 Type 59345 into a pocket calculator and turn it upside down: ShEGS — not quite a word, sorry.
  • ➕ As a number, 59,345 = 5 × 11 × 13 × 83. Its digits add up to 26, a total 2,038 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1110011111010001
  • 🏠 Its numerical neighbours: 59344 (Plevna, MT, 45 mi away) and 59347 (Rosebud, MT, 67 mi away).
  • 🔄 Backwards, 59345 becomes 54395, which is not a ZIP code at all.
  • 👥 30 other ZIP codes are made of exactly the same digits (35459, 35549, 35594, 35954, 39455, 45359, …). The farthest-flung twin is 39455 in Lumberton, MS, 1,328 miles away.
  • 🧭 Farther north than 93% of all ZIP codes, and farther west than 83%.
  • 🎯535 miles northwest of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 59345 and you would come out at 45.86°S, 74.79°E — 321 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 44m of daylight. Shortest: 8h 39m.
  • 📏 At 543.0 square miles of land, 59345 is bigger than 98% of ZIP codes — room for about 412 Central Parks.
🌙 The sky over 59345 today
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Source: USGS.

People and housing

Population35This ZIP35
Households18This ZIP18
Housing units20This ZIP20
Median age66.1This ZIP66.1Montana40.4US 38.9
Median household income$68,125This ZIP$68,125Montana$72,509US $80,734
Median home value$225,000This ZIP$225,000Montana$375,800US $332,700
Bachelor's degree or higher26.5%This ZIP26.5%
Mean commute12.8 minThis ZIP12.8 min
Population density0.1 / sq miThis ZIP0.1 / sq mi

Land area

Land area543.03 sq miThis ZIP543.03 sq mi
Water area0.78 sq miThis ZIP0.78 sq mi

Counties 59345 spans

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

CountyShare of this ZIP
Custer County 68.0%
Powder River County 32.0%

ZIP codes near 59345

ZIPCityDistance
59343 Olive, MT 17.1 mi
59351 Volborg, MT 25.0 mi
59324 Ekalaka, MT 31.6 mi
59336 Ismay, MT 36.0 mi
59316 Boyes, MT 36.1 mi
59317 Broadus, MT 39.0 mi
59332 Hammond, MT 40.9 mi
59354 Willard, MT 43.8 mi
59344 Plevna, MT 45.2 mi
59301 Miles City, MT 46.7 mi

Find every ZIP code within 10 miles of 59345 →

Questions about this ZIP code

Where is ZIP code 59345?

59345 is in Powderville, Montana, in Custer County. Its published point location is 45.8601, -105.2120.

What county is 59345 in?

59345 spans 2 counties: Custer County and Powder River County. Most of it falls in Custer 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 time zone is 59345 in?

59345 uses America/Denver.

How many people live in 59345?

About 35 people live in ZIP code 59345, in 18 households, at 0.1 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 59345?

$68,125 a year, against $72,509 across Montana.

What ZIP codes are near 59345?

The closest are 59343 (17.1 mi), 59351 (25 mi), 59324 (31.6 mi), 59336 (36 mi) and 59316 (36.1 mi).

Is 59345 a PO Box ZIP code?

59345 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “59345 ZIP Code — Powderville, Montana (Custer County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/59345

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