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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/99180

99180

ZIP 99180 is Usk, Washington, in Pend Oreille County; area code 509; Pacific time.

Type
Standard
Time zone
America/Los_Angeles
County
Pend Oreille
Metro area
none
Population
465
Coordinates
48.3052, -117.3065
☼ Live from 99180 — Usk, WA

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Local time: —

Where 99180 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 99180
  • 🔢 Type 99180 into a pocket calculator and turn it upside down: OBIGG — not quite a word, sorry.
  • ➕ As a number, 99,180 = 2 × 2 × 3 × 3 × 5 × 19 × 29. Its digits add up to 27, a total 1,806 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 11000001101101100
  • 🏠 Its numerical neighbours: 99179 (Uniontown, WA, 125 mi away) and 99181 (Valley, WA, 24 mi away).
  • 🔄 Backwards, 99180 becomes 08199, which is not a ZIP code at all.
  • 👥 24 other ZIP codes are made of exactly the same digits (01899, 09189, 09819, 09891, 10989, 10998, …). The farthest-flung twin is 09891 in APO AA, a military post office, 7,297 miles away.
  • 🧭 Farther north than 98% of all ZIP codes, and farther west than 90%.
  • 🎯1,094 miles northwest of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 99180 and you would come out at 48.31°S, 62.69°E — 350 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 16h 06m of daylight. Shortest: 8h 19m.
  • 📏 At 162.4 square miles of land, 99180 is bigger than 88% of ZIP codes — room for about 123 Central Parks.
🌙 The sky over 99180 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population465This ZIP465
Households234This ZIP234
Housing units348This ZIP348
Median age62.3This ZIP62.3Washington38.3US 38.9
Median household income$63,750This ZIP$63,750Washington$98,141US $80,734
Median home value$428,700This ZIP$428,700Washington$564,600US $332,700
Bachelor's degree or higher14.3%This ZIP14.3%
Mean commute28.2 minThis ZIP28.2 min
Population density2.9 / sq miThis ZIP2.9 / sq mi

Business and tax activity

Business establishments12This ZIP12
Employees94This ZIP94
Annual payroll$5,186,000This ZIP$5,186,000
Tax returns filed540This ZIP540
Total adjusted gross income$36,755,000This ZIP$36,755,000

Land area

Land area162.43 sq miThis ZIP162.43 sq mi
Water area3.77 sq miThis ZIP3.77 sq mi

Other place names in 99180

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

ZIP codes near 99180

ZIPCityDistance
99156 Newport, WA 11.3 mi
99119 Cusick, WA 14.1 mi
83822 Oldtown, ID 16.9 mi
99109 Chewelah, WA 18.0 mi
99148 Loon Lake, WA 18.3 mi
83856 Priest River, ID 18.8 mi
99009 Elk, WA 19.4 mi
83804 Blanchard, ID 23.7 mi
99181 Valley, WA 23.9 mi
99110 Clayton, WA 24.1 mi

Find every ZIP code within 10 miles of 99180 →

Questions about this ZIP code

Where is ZIP code 99180?

99180 is in Usk, Washington, in Pend Oreille County. Its published point location is 48.3052, -117.3065.

What county is 99180 in?

99180 lies in Pend Oreille County.

What area code is 99180?

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

What time zone is 99180 in?

99180 uses America/Los_Angeles.

How many people live in 99180?

About 465 people live in ZIP code 99180, in 234 households, at 2.9 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 99180?

$63,750 a year, against $98,141 across Washington.

What ZIP codes are near 99180?

The closest are 99156 (11.3 mi), 99119 (14.1 mi), 83822 (16.9 mi), 99109 (18 mi) and 99148 (18.3 mi).

Is 99180 a PO Box ZIP code?

99180 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “99180 ZIP Code — Usk, Washington (Pend Oreille County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/99180

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