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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/99204

99204

ZIP 99204 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
7,643
Coordinates
47.6472, -117.4267
☼ Live from 99204 — Spokane, WA

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Local time: —

Where 99204 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 99204
  • 🔢 Type 99204 into a pocket calculator and turn it upside down: hOZGG — not quite a word, sorry.
  • ➕ As a number, 99,204 = 2 × 2 × 3 × 7 × 1181. Its digits add up to 24, a total 2,425 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 11000001110000100
  • 🏠 Its numerical neighbours: 99203 (Spokane, WA, 2 mi away) and 99205 (Spokane, WA, 4 mi away).
  • 🔄 Backwards, 99204 becomes 40299 — and that is a real ZIP code: Louisville, KY, 1,728 miles away.
  • 👥 18 other ZIP codes are made of exactly the same digits (04929, 04992, 09249, 29409, 29904, 29940, …). The farthest-flung twin is 09249 in APO AE, a military post office, 4,975 miles away.
  • 🧭 Farther north than 97% of all ZIP codes, and farther west than 90%.
  • 🎯1,081 miles northwest of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 99204 and you would come out at 47.65°S, 62.57°E — 369 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 16h 00m of daylight. Shortest: 8h 25m.
  • 📏 At 1.0 square miles of land, 99204 is bigger than 8% of ZIP codes — about 494 football fields.
🌙 The sky over 99204 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population7,643This ZIP7,643
Households4,050This ZIP4,050
Housing units4,377This ZIP4,377
Median age33.6This ZIP33.6Washington38.3US 38.9
Median household income$58,277This ZIP$58,277Washington$98,141US $80,734
Median home value$397,700This ZIP$397,700Washington$564,600US $332,700
Median gross rent$1,184This ZIP$1,184Washington$1,760US $1,413
Bachelor's degree or higher41.0%This ZIP41.0%
Mean commute17.0 minThis ZIP17.0 min
Population density7,493.1 / sq miThis ZIP7,493.1 / sq mi

Business and tax activity

Business establishments265This ZIP265
Employees8,002This ZIP8,002
Annual payroll$665,688,000This ZIP$665,688,000
Tax returns filed3,380This ZIP3,380
Total adjusted gross income$225,059,000This ZIP$225,059,000

Land area

Land area1.02 sq miThis ZIP1.02 sq mi
Water area0.00 sq mi

Other place names in 99204

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

ZIP codes near 99204

ZIPCityDistance
99210 Spokane, WA 0.5 mi
99211 Spokane, WA 0.5 mi
99214 Spokane, WA 0.5 mi
99215 Spokane, WA 0.5 mi
99219 Spokane, WA 0.5 mi
99220 Spokane, WA 0.5 mi
99228 Spokane, WA 0.5 mi
99252 Spokane, WA 0.5 mi
99256 Spokane, WA 0.5 mi
99260 Spokane, WA 0.5 mi

Find every ZIP code within 10 miles of 99204 →

Questions about this ZIP code

Where is ZIP code 99204?

99204 is in Spokane, Washington, in Spokane County, part of the Spokane-Spokane Valley, WA metropolitan area. Its published point location is 47.6472, -117.4267.

What county is 99204 in?

99204 lies in Spokane County.

What area code is 99204?

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

What time zone is 99204 in?

99204 uses America/Los_Angeles.

How many people live in 99204?

About 7,643 people live in ZIP code 99204, in 4,050 households, at 7,493.1 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 99204?

$58,277 a year, against $98,141 across Washington.

What ZIP codes are near 99204?

The closest are 99210 (0.5 mi), 99211 (0.5 mi), 99214 (0.5 mi), 99215 (0.5 mi) and 99219 (0.5 mi).

Is 99204 a PO Box ZIP code?

99204 is a standard ZIP code. A normal ZIP code with street delivery.

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zipcodes.pro. “99204 ZIP Code — Spokane, Washington (Spokane County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/99204

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