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/99401

99401

ZIP 99401 is Anatone, Washington, in Asotin County; area code 509; Pacific time.

Type
Standard
Time zone
America/Los_Angeles
County
Asotin
Metro area
Lewiston, ID-WA
Population
163
Coordinates
46.0872, -117.2499
☼ Live from 99401 — Anatone, WA

Weather right now

Asking the National Weather Service…

NEXRAD radar
Finding the nearest radar…
Local time: —

Where 99401 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 99401
  • 🔢 Type 99401 into a pocket calculator and turn it upside down: IOhGG — not quite a word, sorry.
  • ➕ 99401 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: 11000010001001001
  • 🏠 Its numerical neighbours: 99371 (Washtucna, WA, 71 mi away) and 99402 (Asotin, WA, 10 mi away).
  • 🔄 Backwards, 99401 becomes 10499, 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, 4,393 miles away.
  • 🧭 Farther north than 94% of all ZIP codes, and farther west than 90%.
  • 🎯1,035 miles northwest of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 99401 and you would come out at 46.09°S, 62.75°E — 414 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 46m of daylight. Shortest: 8h 38m.
  • 📏 At 185.0 square miles of land, 99401 is bigger than 90% of ZIP codes — room for about 140 Central Parks.
🌙 The sky over 99401 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population163This ZIP163
Households77This ZIP77
Housing units91This ZIP91
Median age67.9This ZIP67.9Washington38.3US 38.9
Median household income$41,438This ZIP$41,438Washington$98,141US $80,734
Median home value$322,500This ZIP$322,500Washington$564,600US $332,700
Bachelor's degree or higher5.1%This ZIP5.1%
Population density0.9 / sq miThis ZIP0.9 / sq mi

Business and tax activity

Tax returns filed130This ZIP130
Total adjusted gross income$9,697,000This ZIP$9,697,000

Land area

Land area185.03 sq miThis ZIP185.03 sq mi
Water area0.42 sq miThis ZIP0.42 sq mi

Other place names in 99401

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

ZIP codes near 99401

ZIPCityDistance
99402 Asotin, WA 10.4 mi
83501 Lewiston, ID 19.3 mi
99403 Clarkston, WA 20.0 mi
83555 Winchester, ID 25.6 mi
99347 Pomeroy, WA 27.9 mi
83540 Lapwai, ID 28.6 mi
99179 Uniontown, WA 28.8 mi
99328 Dayton, WA 32.4 mi
97885 Wallowa, OR 32.7 mi
83524 Culdesac, ID 34.3 mi

Find every ZIP code within 10 miles of 99401 →

Questions about this ZIP code

Where is ZIP code 99401?

99401 is in Anatone, Washington, in Asotin County, part of the Lewiston, ID-WA metropolitan area. Its published point location is 46.0872, -117.2499.

What county is 99401 in?

99401 lies in Asotin County.

What area code is 99401?

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

What time zone is 99401 in?

99401 uses America/Los_Angeles.

How many people live in 99401?

About 163 people live in ZIP code 99401, in 77 households, at 0.9 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 99401?

$41,438 a year, against $98,141 across Washington.

What ZIP codes are near 99401?

The closest are 99402 (10.4 mi), 83501 (19.3 mi), 99403 (20 mi), 83555 (25.6 mi) and 99347 (27.9 mi).

Is 99401 a PO Box ZIP code?

99401 is a standard ZIP code. A normal ZIP code with street delivery.

Download or cite

Cite this page

zipcodes.pro. “99401 ZIP Code — Anatone, Washington (Asotin County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/99401

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/99401.json

Underlying data is public domain or openly licensed — sources, vintages and licences.