Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

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/99104

99104

ZIP 99104 is Belmont, Washington, in Whitman County; area code 509; Pacific time.

Type
No street area
Time zone
America/Los_Angeles
County
Whitman
Metro area
Pullman, WA
Coordinates
47.0793, -117.1770

The Census map gives this ZIP code no delivery area of its own, which usually means it serves post office boxes, a single organization or a post office rather than streets of homes.

This ZIP code has no Census tabulation area of its own. Its point falls inside ZCTA 99158, whose figures describe that area — not this ZIP code.

☼ Live from 99104 — Belmont, WA

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Where 99104 is

This ZIP code has no Census tabulation area, so there is no boundary to draw — the marker is its published point location.

★ Weird and wonderful facts about 99104
  • 🔢 Type 99104 into a pocket calculator and turn it upside down: hOIGG — not quite a word, sorry.
  • ➕ As a number, 99,104 = 2 × 2 × 2 × 2 × 2 × 19 × 163. Its digits add up to 23, a total 2,533 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 11000001100100000
  • 🏠 Its numerical neighbours: 99103 (Almira, WA, 93 mi away) and 99105 (Benge, WA, 43 mi away).
  • 🔄 Backwards, 99104 becomes 40199, which is not a ZIP code at all.
  • 👥 22 other ZIP codes are made of exactly the same digits (01949, 09419, 10949, 10994, 19049, 19094, …). The farthest-flung twin is 09419 in FPO AE, a military post office, 4,335 miles away.
  • 🧭 Farther north than 95% of all ZIP codes, and farther west than 90%.
  • 🎯1,055 miles northwest of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 99104 and you would come out at 47.08°S, 62.82°E — 375 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 54m of daylight. Shortest: 8h 30m.
🌙 The sky over 99104 today
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Source: USGS.

Land area

ZIP codes near 99104

ZIPCityDistance
99128 Farmington, WA 4.7 mi
99158 Oakesdale, WA 4.8 mi
99130 Garfield, WA 5.6 mi
99174 Steptoe, WA 9.8 mi
99033 Tekoa, WA 11.1 mi
99176 Thornton, WA 11.1 mi
83824 Desmet, ID 11.2 mi
99161 Palouse, WA 12.2 mi
99018 Latah, WA 14.7 mi
83855 Potlatch, ID 14.8 mi

Find every ZIP code within 10 miles of 99104 →

Questions about this ZIP code

Where is ZIP code 99104?

99104 is in Belmont, Washington, in Whitman County, part of the Pullman, WA micropolitan area. Its published point location is 47.0793, -117.1770.

What county is 99104 in?

99104 lies in Whitman County.

What area code is 99104?

Belmont uses area code 509, from NANPA's telephone records.

What time zone is 99104 in?

99104 uses America/Los_Angeles.

What ZIP codes are near 99104?

The closest are 99128 (4.7 mi), 99158 (4.8 mi), 99130 (5.6 mi), 99174 (9.8 mi) and 99033 (11.1 mi).

Is 99104 a PO Box ZIP code?

Possibly. The Census map gives this ZIP code no delivery area of its own, which usually means it serves post office boxes, a single organization or a post office rather than streets of homes.

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Cite this page

zipcodes.pro. “99104 ZIP Code — Belmont, Washington (Whitman County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/99104

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/99104.json

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