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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/99223

99223

ZIP 99223 is in Spokane, Washington, in Spokane County; area code 509; Pacific time. Spokane has 28 ZIP codes in all.

Type
Standard
Time zone
America/Los_Angeles
County
Spokane
Population
36,094
Coordinates
47.5971, -117.3178
☼ Live from 99223 — Spokane, WA

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Local time: —

Where 99223 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 99223
  • 🔢 Type 99223 into a pocket calculator and turn it upside down: EZZGG — not quite a word, sorry.
  • ➕ 99223 is a prime number. It cannot be divided by anything except 1 and itself. Its digits add up to 25, a total 2,242 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 11000001110010111
  • 🏠 Its numerical neighbours: 99220 (Spokane, WA, 7 mi away) and 99224 (Spokane, WA, 11 mi away).
  • 🔄 Backwards, 99223 becomes 32299, which is not a ZIP code at all.
  • 👥 10 other ZIP codes are made of exactly the same digits (22939, 29329, 29923, 29932, 92239, 92329, …). The farthest-flung twin is 29923 in Gifford, SC, 2,132 miles away.
  • 🧭 Farther north than 97% of all ZIP codes, and farther west than 90%.
  • 🎯1,075 miles northwest of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 99223 and you would come out at 47.60°S, 62.68°E — 366 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 59m of daylight. Shortest: 8h 25m.
  • 📏 At 32.1 square miles of land, 99223 is bigger than 47% of ZIP codes — room for about 24 Central Parks.
🌙 The sky over 99223 today
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🌋 Shake report
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Source: USGS.

People and housing

Population36,094This ZIP36,094
Households14,767This ZIP14,767
Housing units15,287This ZIP15,287
Median age40.9This ZIP40.9Washington38.3US 38.9
Median household income$94,279This ZIP$94,279Washington$98,141US $80,734
Median home value$490,500This ZIP$490,500Washington$564,600US $332,700
Median gross rent$1,347This ZIP$1,347Washington$1,760US $1,413
Bachelor's degree or higher51.3%This ZIP51.3%
Mean commute22.1 minThis ZIP22.1 min
Population density1,125.7 / sq miThis ZIP1,125.7 / sq mi

Business and tax activity

Business establishments645This ZIP645
Employees5,058This ZIP5,058
Annual payroll$216,609,000This ZIP$216,609,000
Tax returns filed15,880This ZIP15,880
Total adjusted gross income$1,855,005,000This ZIP$1,855,005,000

Land area

Land area32.06 sq miThis ZIP32.06 sq mi
Water area0.01 sq miThis ZIP0.01 sq mi

Other place names in 99223

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

ZIP codes near 99223

ZIPCityDistance
99206 Spokane, WA 3.6 mi
99213 Spokane, WA 4.4 mi
99203 Spokane, WA 4.6 mi
99212 Spokane, WA 4.7 mi
99202 Spokane, WA 5.0 mi
99036 Valleyford, WA 5.7 mi
99037 Veradale, WA 6.1 mi
99204 Spokane, WA 6.1 mi
99258 Spokane, WA 6.2 mi
99210 Spokane, WA 6.6 mi

Find every ZIP code within 10 miles of 99223 →

Questions about this ZIP code

Where is ZIP code 99223?

99223 is in Spokane, Washington, in Spokane County, part of the Spokane-Spokane Valley, WA metropolitan area. Its published point location is 47.5971, -117.3178.

What county is 99223 in?

99223 lies in Spokane County.

What area code is 99223?

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

What time zone is 99223 in?

99223 uses America/Los_Angeles.

How many people live in 99223?

About 36,094 people live in ZIP code 99223, in 14,767 households, at 1,125.7 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 99223?

$94,279 a year, against $98,141 across Washington.

What ZIP codes are near 99223?

The closest are 99206 (3.6 mi), 99213 (4.4 mi), 99203 (4.6 mi), 99212 (4.7 mi) and 99202 (5 mi).

Is 99223 a PO Box ZIP code?

99223 is a standard ZIP code. A normal ZIP code with street delivery.

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zipcodes.pro. “99223 ZIP Code — Spokane, Washington (Spokane County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/99223

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