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zipcodes.pro — ZIP/99110

99110

ZIP 99110 is Clayton, Washington, mostly in Stevens County; area code 509; Pacific time.

Type
Standard
Time zone
America/Los_Angeles
County
Stevens +1 more
Population
1,505
Coordinates
48.0083, -117.5811
☼ Live from 99110 — Clayton, WA

Weather right now

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Local time: —

Where 99110 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 99110
  • 🔢 Type 99110 into a pocket calculator and turn it upside down: OIIGG — not quite a word, sorry.
  • ➕ As a number, 99,110 = 2 × 5 × 11 × 17 × 53. Its digits add up to 20, a total 2,586 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 11000001100100110
  • 🏠 Its numerical neighbours: 99109 (Chewelah, WA, 20 mi away) and 99111 (Colfax, WA, 80 mi away).
  • 🔄 Backwards, 99110 becomes 01199 — and that is a real ZIP code: Springfield, MA, 2,200 miles away.
  • 👥 13 other ZIP codes are made of exactly the same digits (01199, 10199, 10919, 19019, 19091, 19109, …). The farthest-flung twin is 01199 in Springfield, MA, 2,200 miles away.
  • 🧭 Farther north than 97% of all ZIP codes, and farther west than 90%.
  • 🎯1,097 miles northwest of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 99110 and you would come out at 48.01°S, 62.42°E — 368 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 16h 03m of daylight. Shortest: 8h 22m.
  • 📏 At 38.6 square miles of land, 99110 is bigger than 52% of ZIP codes — room for about 29 Central Parks.
🌙 The sky over 99110 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population1,505This ZIP1,505
Households573This ZIP573
Housing units601This ZIP601
Median age32.4This ZIP32.4Washington38.3US 38.9
Median household income$76,106This ZIP$76,106Washington$98,141US $80,734
Median home value$453,100This ZIP$453,100Washington$564,600US $332,700
Median gross rent$954This ZIP$954Washington$1,760US $1,413
Bachelor's degree or higher22.5%This ZIP22.5%
Mean commute38.6 minThis ZIP38.6 min
Population density39.0 / sq miThis ZIP39.0 / sq mi

Business and tax activity

Business establishments35This ZIP35
Employees91This ZIP91
Annual payroll$4,886,000This ZIP$4,886,000
Tax returns filed770This ZIP770
Total adjusted gross income$55,813,000This ZIP$55,813,000

Land area

Land area38.62 sq miThis ZIP38.62 sq mi
Water area0.00 sq mi

Counties 99110 spans

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

CountyShare of this ZIP
Stevens County 93.0%
Spokane County 7.0%

Other place names in 99110

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

ZIP codes near 99110

ZIPCityDistance
99006 Deer Park, WA 5.2 mi
99148 Loon Lake, WA 6.9 mi
99034 Tumtum, WA 11.9 mi
99181 Valley, WA 12.7 mi
99173 Springdale, WA 13.0 mi
99026 Nine Mile Falls, WA 14.5 mi
99013 Ford, WA 14.7 mi
99005 Colbert, WA 15.2 mi
99009 Elk, WA 15.2 mi
99003 Chattaroy, WA 15.5 mi

Find every ZIP code within 10 miles of 99110 →

Questions about this ZIP code

Where is ZIP code 99110?

99110 is in Clayton, Washington, in Stevens County, part of the Spokane-Spokane Valley, WA metropolitan area. Its published point location is 48.0083, -117.5811.

What county is 99110 in?

99110 spans 2 counties: Stevens County and Spokane County. Most of it falls in Stevens 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 99110?

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

What time zone is 99110 in?

99110 uses America/Los_Angeles.

How many people live in 99110?

About 1,505 people live in ZIP code 99110, in 573 households, at 39.0 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 99110?

$76,106 a year, against $98,141 across Washington.

What ZIP codes are near 99110?

The closest are 99006 (5.2 mi), 99148 (6.9 mi), 99034 (11.9 mi), 99181 (12.7 mi) and 99173 (13 mi).

Is 99110 a PO Box ZIP code?

99110 is a standard ZIP code. A normal ZIP code with street delivery.

Download or cite

Cite this page

zipcodes.pro. “99110 ZIP Code — Clayton, Washington (Stevens County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/99110

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/99110.json

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