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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/99333

99333

ZIP 99333 is Hooper, Washington, mostly in Whitman County; area code 509; Pacific time.

Type
Standard
Time zone
America/Los_Angeles
County
Whitman +1 more
Metro area
Pullman, WA
Population
151
Coordinates
46.6970, -118.1394
☼ Live from 99333 — Hooper, WA

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Where 99333 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 99333
  • 🔢 Type 99333 into a pocket calculator and turn it upside down: EEEGG — not quite a word, sorry.
  • ➕ As a number, 99,333 = 3 × 3 × 3 × 13 × 283. Its digits add up to 27, a total 1,806 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 11000010000000101
  • 🏠 Its numerical neighbours: 99330 (Eltopia, WA, 45 mi away) and 99335 (Kahlotus, WA, 15 mi away).
  • 🔄 Backwards, 99333 becomes 33399, which is not a ZIP code at all.
  • 👥 3 other ZIP codes are made of exactly the same digits (33993, 39339, 93933). The farthest-flung twin is 33993 in Cape Coral, FL, 2,399 miles away.
  • 🧭 Farther north than 95% of all ZIP codes, and farther west than 91%.
  • 🎯1,089 miles northwest of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 99333 and you would come out at 46.70°S, 61.86°E — 427 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 51m of daylight. Shortest: 8h 33m.
  • 📏 At 86.4 square miles of land, 99333 is bigger than 74% of ZIP codes — room for about 66 Central Parks.
🌙 The sky over 99333 today
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🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population151This ZIP151
Households45This ZIP45
Housing units45This ZIP45
Median age28.9This ZIP28.9Washington38.3US 38.9
Median household income$98,315This ZIP$98,315Washington$98,141US $80,734
Median home value$450,000This ZIP$450,000Washington$564,600US $332,700
Bachelor's degree or higher32.5%This ZIP32.5%
Population density1.7 / sq miThis ZIP1.7 / sq mi

Land area

Land area86.45 sq miThis ZIP86.45 sq mi
Water area2.29 sq miThis ZIP2.29 sq mi

Counties 99333 spans

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

CountyShare of this ZIP
Whitman County 88.8%
Adams County 11.2%

ZIP codes near 99333

ZIPCityDistance
99136 Hay, WA 9.2 mi
99371 Washtucna, WA 11.0 mi
99359 Starbuck, WA 12.8 mi
99143 Lacrosse, WA 14.6 mi
99335 Kahlotus, WA 14.6 mi
99105 Benge, WA 18.2 mi
99348 Prescott, WA 24.7 mi
99125 Endicott, WA 26.0 mi
99341 Lind, WA 27.8 mi
99169 Ritzville, WA 31.3 mi

Find every ZIP code within 10 miles of 99333 →

Questions about this ZIP code

Where is ZIP code 99333?

99333 is in Hooper, Washington, in Whitman County, part of the Pullman, WA micropolitan area. Its published point location is 46.6970, -118.1394.

What county is 99333 in?

99333 spans 2 counties: Whitman County and Adams County. Most of it falls in Whitman 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 99333?

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

What time zone is 99333 in?

99333 uses America/Los_Angeles.

How many people live in 99333?

About 151 people live in ZIP code 99333, in 45 households, at 1.7 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 99333?

$98,315 a year, against $98,141 across Washington.

What ZIP codes are near 99333?

The closest are 99136 (9.2 mi), 99371 (11 mi), 99359 (12.8 mi), 99143 (14.6 mi) and 99335 (14.6 mi).

Is 99333 a PO Box ZIP code?

99333 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “99333 ZIP Code — Hooper, Washington (Whitman County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/99333

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