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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/98104

98104

ZIP 98104 is in Seattle, Washington, in King County; area code 206; Pacific time. Seattle has 59 ZIP codes in all.

Type
Standard
Time zone
America/Los_Angeles
County
King
Population
16,542
Coordinates
47.6005, -122.3322
☼ Live from 98104 — Seattle, WA

Weather right now

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Local time: —

Where 98104 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 98104
  • 🔢 Type 98104 into a pocket calculator and turn it upside down: hOIBG — not quite a word, sorry.
  • ➕ As a number, 98,104 = 2 × 2 × 2 × 12263. Its digits add up to 22, a total 2,607 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10111111100111000
  • 🏠 Its numerical neighbours: 98103 (Seattle, WA, 5 mi away) and 98105 (Seattle, WA, 5 mi away).
  • 🔄 Backwards, 98104 becomes 40189, which is not a ZIP code at all.
  • 👥 48 other ZIP codes are made of exactly the same digits (01984, 04918, 04981, 09184, 09418, 09814, …). The farthest-flung twin is 09814 in APO AE, a military post office, 7,397 miles away.
  • 🧭 Farther north than 97% of all ZIP codes, and farther west than 96%.
  • 🎯1,295 miles northwest of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 98104 and you would come out at 47.60°S, 57.67°E — 587 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 0.945 square miles of land, 98104 is bigger than 8% of ZIP codes — about 457 football fields.
🌙 The sky over 98104 today
  • Working out the sun…
🌋 Shake report
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Source: USGS.

People and housing

Population16,542This ZIP16,542
Households9,578This ZIP9,578
Housing units11,371This ZIP11,371
Median age37.5This ZIP37.5Washington38.3US 38.9
Median household income$61,460This ZIP$61,460Washington$98,141US $80,734
Median home value$616,000This ZIP$616,000Washington$564,600US $332,700
Median gross rent$1,556This ZIP$1,556Washington$1,760US $1,413
Bachelor's degree or higher45.8%This ZIP45.8%
Mean commute24.9 minThis ZIP24.9 min
Population density17,504.8 / sq miThis ZIP17,504.8 / sq mi

Business and tax activity

Business establishments2,154This ZIP2,154
Employees63,710This ZIP63,710
Annual payroll$8,530,314,000This ZIP$8,530,314,000
Tax returns filed7,970This ZIP7,970
Total adjusted gross income$1,022,204,000This ZIP$1,022,204,000

Land area

Land area0.95 sq miThis ZIP0.95 sq mi
Water area0.18 sq miThis ZIP0.18 sq mi

Other place names in 98104

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

ZIP codes near 98104

ZIPCityDistance
98174 Seattle, WA 0.3 mi
98194 Seattle, WA 0.3 mi
98164 Seattle, WA 0.4 mi
98111 Seattle, WA 0.4 mi
98114 Seattle, WA 0.4 mi
98124 Seattle, WA 0.4 mi
98129 Seattle, WA 0.4 mi
98131 Seattle, WA 0.4 mi
98138 Seattle, WA 0.4 mi
98145 Seattle, WA 0.4 mi

Find every ZIP code within 10 miles of 98104 →

Questions about this ZIP code

Where is ZIP code 98104?

98104 is in Seattle, Washington, in King County, part of the Seattle-Tacoma-Bellevue, WA metropolitan area. Its published point location is 47.6005, -122.3322.

What county is 98104 in?

98104 lies in King County.

What area code is 98104?

Seattle uses area code 206, from NANPA's telephone records.

What time zone is 98104 in?

98104 uses America/Los_Angeles.

How many people live in 98104?

About 16,542 people live in ZIP code 98104, in 9,578 households, at 17,504.8 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 98104?

$61,460 a year, against $98,141 across Washington.

What ZIP codes are near 98104?

The closest are 98174 (0.3 mi), 98194 (0.3 mi), 98164 (0.4 mi), 98111 (0.4 mi) and 98114 (0.4 mi).

Is 98104 a PO Box ZIP code?

98104 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “98104 ZIP Code — Seattle, Washington (King County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/98104

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