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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/98603

98603

ZIP 98603 is Ariel, Washington, in Cowlitz County; area code 360; Pacific time.

Type
Standard
Time zone
America/Los_Angeles
County
Cowlitz
Metro area
Longview-Kelso, WA
Population
1,267
Coordinates
46.0555, -122.4148
☼ Live from 98603 — Ariel, WA

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Where 98603 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 98603
  • 🔢 Type 98603 into a pocket calculator and turn it upside down: EOgBG — not quite a word, sorry.
  • ➕ As a number, 98,603 = 151 × 653. Its digits add up to 26, a total 2,038 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 11000000100101011
  • 🏠 Its numerical neighbours: 98602 (Appleton, WA, 56 mi away) and 98604 (Battle Ground, WA, 18 mi away).
  • 🔄 Backwards, 98603 becomes 30689, which is not a ZIP code at all.
  • 👥 29 other ZIP codes are made of exactly the same digits (03869, 03896, 06389, 09683, 09836, 36089, …). The farthest-flung twin is 09683 in APO AE, a military post office, 7,416 miles away.
  • 🧭 Farther north than 94% of all ZIP codes, and farther west than 97%.
  • 🎯1,274 miles northwest of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 98603 and you would come out at 46.06°S, 57.59°E — 629 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 46m of daylight. Shortest: 8h 38m.
  • 📏 At 114.7 square miles of land, 98603 is bigger than 81% of ZIP codes — room for about 87 Central Parks.
🌙 The sky over 98603 today
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🌋 Shake report
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Source: USGS.

People and housing

Population1,267This ZIP1,267
Households395This ZIP395
Housing units615This ZIP615
Median age41.3This ZIP41.3Washington38.3US 38.9
Median household income$78,281This ZIP$78,281Washington$98,141US $80,734
Median home value$464,500This ZIP$464,500Washington$564,600US $332,700
Bachelor's degree or higher15.9%This ZIP15.9%
Mean commute48.0 minThis ZIP48.0 min
Population density11.0 / sq miThis ZIP11.0 / sq mi

Business and tax activity

Business establishments20This ZIP20
Employees169This ZIP169
Annual payroll$13,473,000This ZIP$13,473,000
Tax returns filed450This ZIP450
Total adjusted gross income$41,704,000This ZIP$41,704,000

Land area

Land area114.73 sq miThis ZIP114.73 sq mi
Water area2.86 sq miThis ZIP2.86 sq mi

ZIP codes near 98603

ZIPCityDistance
98601 Amboy, WA 8.2 mi
98625 Kalama, WA 8.4 mi
98616 Cougar, WA 11.2 mi
98675 Yacolt, WA 13.3 mi
98674 Woodland, WA 14.0 mi
98629 La Center, WA 15.8 mi
98622 Heisson, WA 16.4 mi
98604 Battle Ground, WA 17.9 mi
98649 Toutle, WA 18.8 mi
98626 Kelso, WA 19.0 mi

Find every ZIP code within 10 miles of 98603 →

Questions about this ZIP code

Where is ZIP code 98603?

98603 is in Ariel, Washington, in Cowlitz County, part of the Longview-Kelso, WA metropolitan area. Its published point location is 46.0555, -122.4148.

What county is 98603 in?

98603 lies in Cowlitz County.

What area code is 98603?

Ariel uses area code 360, from NANPA's telephone records.

What time zone is 98603 in?

98603 uses America/Los_Angeles.

How many people live in 98603?

About 1,267 people live in ZIP code 98603, in 395 households, at 11.0 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 98603?

$78,281 a year, against $98,141 across Washington.

What ZIP codes are near 98603?

The closest are 98601 (8.2 mi), 98625 (8.4 mi), 98616 (11.2 mi), 98675 (13.3 mi) and 98674 (14 mi).

Is 98603 a PO Box ZIP code?

98603 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “98603 ZIP Code — Ariel, Washington (Cowlitz County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/98603

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