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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/98177

98177

ZIP 98177 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
21,090
Coordinates
47.7421, -122.3712
☼ Live from 98177 — Seattle, WA

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Where 98177 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 98177
  • 🔢 Type 98177 into a pocket calculator and turn it upside down: LLIBG — not quite a word, sorry.
  • ➕ As a number, 98,177 = 31 × 3167. Its digits add up to 32, a total 644 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10111111110000001
  • 🏠 Its numerical neighbours: 98175 (Seattle, WA, 4 mi away) and 98178 (Seattle, WA, 18 mi away).
  • 🔄 Backwards, 98177 becomes 77189, which is not a ZIP code at all.
  • 👥 10 other ZIP codes are made of exactly the same digits (17978, 18977, 78719, 79178, 79718, 79781, …). The farthest-flung twin is 18977 in Washington Crossing, PA, 2,377 miles away.
  • 🧭 Farther north than 97% of all ZIP codes, and farther west than 96%.
  • 🎯1,300 miles northwest of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 98177 and you would come out at 47.74°S, 57.63°E — 586 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 24m.
  • 📏 At 5.6 square miles of land, 98177 is bigger than 20% of ZIP codes — room for about 4.3 Central Parks.
🌙 The sky over 98177 today
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🌋 Shake report
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Source: USGS.

People and housing

Population21,090This ZIP21,090
Households8,134This ZIP8,134
Housing units8,304This ZIP8,304
Median age45.8This ZIP45.8Washington38.3US 38.9
Median household income$169,918This ZIP$169,918Washington$98,141US $80,734
Median home value$1,048,900This ZIP$1,048,900Washington$564,600US $332,700
Median gross rent$2,252This ZIP$2,252Washington$1,760US $1,413
Bachelor's degree or higher67.6%This ZIP67.6%
Mean commute29.0 minThis ZIP29.0 min
Population density3,740.0 / sq miThis ZIP3,740.0 / sq mi

Business and tax activity

Business establishments415This ZIP415
Employees1,698This ZIP1,698
Annual payroll$107,616,000This ZIP$107,616,000
Tax returns filed10,380This ZIP10,380
Total adjusted gross income$2,356,967,000This ZIP$2,356,967,000

Land area

Land area5.64 sq miThis ZIP5.64 sq mi
Water area1.36 sq miThis ZIP1.36 sq mi

Other place names in 98177

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

ZIP codes near 98177

ZIPCityDistance
98133 Seattle, WA 1.3 mi
98155 Seattle, WA 3.4 mi
98125 Seattle, WA 3.7 mi
98165 Seattle, WA 3.7 mi
98175 Seattle, WA 3.7 mi
98117 Seattle, WA 3.8 mi
98020 Edmonds, WA 4.0 mi
98043 Mountlake Terrace, WA 4.8 mi
98103 Seattle, WA 5.0 mi
98113 Seattle, WA 5.1 mi

Find every ZIP code within 10 miles of 98177 →

Questions about this ZIP code

Where is ZIP code 98177?

98177 is in Seattle, Washington, in King County, part of the Seattle-Tacoma-Bellevue, WA metropolitan area. Its published point location is 47.7421, -122.3712.

What county is 98177 in?

98177 lies in King County.

What area code is 98177?

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

What time zone is 98177 in?

98177 uses America/Los_Angeles.

How many people live in 98177?

About 21,090 people live in ZIP code 98177, in 8,134 households, at 3,740.0 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 98177?

$169,918 a year, against $98,141 across Washington.

What ZIP codes are near 98177?

The closest are 98133 (1.3 mi), 98155 (3.4 mi), 98125 (3.7 mi), 98165 (3.7 mi) and 98175 (3.7 mi).

Is 98177 a PO Box ZIP code?

98177 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “98177 ZIP Code — Seattle, Washington (King County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/98177

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