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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/98155

98155

ZIP 98155 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
36,511
Coordinates
47.7544, -122.3005
☼ Live from 98155 — Seattle, WA

Weather right now

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Local time: —

Where 98155 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 98155
  • 🔢 Type 98155 into a pocket calculator and turn it upside down: SSIBG — not quite a word, sorry.
  • ➕ As a number, 98,155 = 5 × 67 × 293. Its digits add up to 28, a total 1,520 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10111111101101011
  • 🏠 Its numerical neighbours: 98154 (Seattle, WA, 10 mi away) and 98158 (Seattle, WA, 21 mi away).
  • 🔄 Backwards, 98155 becomes 55189, which is not a ZIP code at all.
  • 👥 11 other ZIP codes are made of exactly the same digits (15958, 18955, 55918, 55981, 59851, 89155, …). The farthest-flung twin is 18955 in Richlandtown, PA, 2,347 miles away.
  • 🧭 Farther north than 97% of all ZIP codes, and farther west than 96%.
  • 🎯1,297 miles northwest of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 98155 and you would come out at 47.75°S, 57.70°E — 582 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 16h 01m of daylight. Shortest: 8h 24m.
  • 📏 At 7.5 square miles of land, 98155 is bigger than 24% of ZIP codes — room for about 5.7 Central Parks.
🌙 The sky over 98155 today
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🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population36,511This ZIP36,511
Households14,344This ZIP14,344
Housing units14,955This ZIP14,955
Median age40.7This ZIP40.7Washington38.3US 38.9
Median household income$131,540This ZIP$131,540Washington$98,141US $80,734
Median home value$816,400This ZIP$816,400Washington$564,600US $332,700
Median gross rent$2,127This ZIP$2,127Washington$1,760US $1,413
Bachelor's degree or higher56.5%This ZIP56.5%
Mean commute26.6 minThis ZIP26.6 min
Population density4,839.7 / sq miThis ZIP4,839.7 / sq mi

Business and tax activity

Business establishments671This ZIP671
Employees4,619This ZIP4,619
Annual payroll$237,237,000This ZIP$237,237,000
Tax returns filed18,250This ZIP18,250
Total adjusted gross income$2,262,492,000This ZIP$2,262,492,000

Land area

Land area7.54 sq miThis ZIP7.54 sq mi
Water area0.63 sq miThis ZIP0.63 sq mi

Other place names in 98155

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

ZIP codes near 98155

ZIPCityDistance
98133 Seattle, WA 2.2 mi
98028 Kenmore, WA 2.5 mi
98125 Seattle, WA 2.6 mi
98165 Seattle, WA 2.6 mi
98175 Seattle, WA 2.6 mi
98043 Mountlake Terrace, WA 2.8 mi
98177 Seattle, WA 3.4 mi
98036 Lynnwood, WA 3.9 mi
98041 Bothell, WA 4.4 mi
98046 Lynnwood, WA 4.6 mi

Find every ZIP code within 10 miles of 98155 →

Questions about this ZIP code

Where is ZIP code 98155?

98155 is in Seattle, Washington, in King County, part of the Seattle-Tacoma-Bellevue, WA metropolitan area. Its published point location is 47.7544, -122.3005.

What county is 98155 in?

98155 lies in King County.

What area code is 98155?

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

What time zone is 98155 in?

98155 uses America/Los_Angeles.

How many people live in 98155?

About 36,511 people live in ZIP code 98155, in 14,344 households, at 4,839.7 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 98155?

$131,540 a year, against $98,141 across Washington.

What ZIP codes are near 98155?

The closest are 98133 (2.2 mi), 98028 (2.5 mi), 98125 (2.6 mi), 98165 (2.6 mi) and 98175 (2.6 mi).

Is 98155 a PO Box ZIP code?

98155 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “98155 ZIP Code — Seattle, Washington (King County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/98155

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