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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/98255

98255

ZIP 98255 is Hamilton, Washington, in Skagit County; area codes 360 and 564; Pacific time.

Type
Standard
Time zone
America/Los_Angeles
County
Skagit
Population
198
Coordinates
48.5235, -121.9920
☼ Live from 98255 — Hamilton, WA

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Local time: —

Where 98255 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 98255
  • 🔢 Type 98255 into a pocket calculator and turn it upside down: SSZBG — not quite a word, sorry.
  • ➕ As a number, 98,255 = 5 × 43 × 457. Its digits add up to 29, a total 1,296 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10111111111001111
  • 🏠 Its numerical neighbours: 98253 (Greenbank, WA, 40 mi away) and 98256 (Index, WA, 55 mi away).
  • 🔄 Backwards, 98255 becomes 55289, which is not a ZIP code at all.
  • 👥 18 other ZIP codes are made of exactly the same digits (25958, 25985, 29585, 55982, 58259, 58529, …). The farthest-flung twin is 29585 in Pawleys Island, SC, 2,423 miles away.
  • 🧭 Farther north than 98% of all ZIP codes, and farther west than 95%.
  • 🎯1,299 miles northwest of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 98255 and you would come out at 48.52°S, 58.01°E — 557 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 16h 08m of daylight. Shortest: 8h 18m.
  • 📏 At 0.663 square miles of land, 98255 is bigger than 6% of ZIP codes — about 321 football fields.
🌙 The sky over 98255 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population198This ZIP198
Households99This ZIP99
Housing units105This ZIP105
Median age38.9This ZIP38.9Washington38.3US 38.9
Median household income$68,194This ZIP$68,194Washington$98,141US $80,734
Median home value$217,500This ZIP$217,500Washington$564,600US $332,700
Bachelor's degree or higher8.4%This ZIP8.4%
Mean commute26.3 minThis ZIP26.3 min
Population density298.6 / sq miThis ZIP298.6 / sq mi

Business and tax activity

Business establishments5This ZIP5
Employees504This ZIP504
Annual payroll$56,283,000This ZIP$56,283,000

Land area

Land area0.66 sq miThis ZIP0.66 sq mi
Water area0.00 sq mi

Other place names in 98255

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

ZIP codes near 98255

ZIPCityDistance
98263 Lyman, WA 3.4 mi
98284 Sedro Woolley, WA 6.7 mi
98235 Clearlake, WA 11.7 mi
98237 Concrete, WA 12.9 mi
98274 Mount Vernon, WA 14.0 mi
98220 Acme, WA 14.5 mi
98233 Burlington, WA 16.3 mi
98244 Deming, WA 17.6 mi
98232 Bow, WA 19.3 mi
98273 Mount Vernon, WA 19.5 mi

Find every ZIP code within 10 miles of 98255 →

Questions about this ZIP code

Where is ZIP code 98255?

98255 is in Hamilton, Washington, in Skagit County, part of the Mount Vernon-Anacortes, WA metropolitan area. Its published point location is 48.5235, -121.9920.

What county is 98255 in?

98255 lies in Skagit County.

What area code is 98255?

Hamilton uses area codes 360 and 564, from NANPA's telephone records.

What time zone is 98255 in?

98255 uses America/Los_Angeles.

How many people live in 98255?

About 198 people live in ZIP code 98255, in 99 households, at 298.6 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 98255?

$68,194 a year, against $98,141 across Washington.

What ZIP codes are near 98255?

The closest are 98263 (3.4 mi), 98284 (6.7 mi), 98235 (11.7 mi), 98237 (12.9 mi) and 98274 (14 mi).

Is 98255 a PO Box ZIP code?

98255 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “98255 ZIP Code — Hamilton, Washington (Skagit County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/98255

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