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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/99349

99349

ZIP 99349 is Mattawa, Washington, in Grant County; area code 509; Pacific time.

Type
Standard
Time zone
America/Los_Angeles
County
Grant
Metro area
Moses Lake, WA
Population
8,143
Coordinates
46.7311, -119.7005
☼ Live from 99349 — Mattawa, WA

Weather right now

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Local time: —

Where 99349 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 99349
  • 🔢 Type 99349 into a pocket calculator and turn it upside down: GhEGG — not quite a word, sorry.
  • ➕ 99349 is a prime number. It cannot be divided by anything except 1 and itself. Its digits add up to 34, a total 322 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 11000010000010101
  • 🏠 Its numerical neighbours: 99348 (Prescott, WA, 64 mi away) and 99350 (Prosser, WA, 41 mi away).
  • 🔄 Backwards, 99349 becomes 94399, which is not a ZIP code at all.
  • 👥 1 other ZIP code is made of exactly the same digits (94939). The farthest-flung twin is 94939 in Larkspur, CA, 624 miles away.
  • 🧭 Farther north than 95% of all ZIP codes, and farther west than 93%.
  • 🎯1,160 miles northwest of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 99349 and you would come out at 46.73°S, 60.30°E — 492 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 51m of daylight. Shortest: 8h 32m.
  • 📏 At 267.4 square miles of land, 99349 is bigger than 94% of ZIP codes — room for about 203 Central Parks.
🌙 The sky over 99349 today
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🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population8,143This ZIP8,143
Households2,388This ZIP2,388
Housing units2,815This ZIP2,815
Median age29.4This ZIP29.4Washington38.3US 38.9
Median household income$61,333This ZIP$61,333Washington$98,141US $80,734
Median home value$427,800This ZIP$427,800Washington$564,600US $332,700
Median gross rent$1,243This ZIP$1,243Washington$1,760US $1,413
Bachelor's degree or higher12.1%This ZIP12.1%
Mean commute21.8 minThis ZIP21.8 min
Population density30.5 / sq miThis ZIP30.5 / sq mi

Business and tax activity

Business establishments73This ZIP73
Employees619This ZIP619
Annual payroll$29,221,000This ZIP$29,221,000
Tax returns filed3,730This ZIP3,730
Total adjusted gross income$177,738,000This ZIP$177,738,000

Land area

Land area267.38 sq miThis ZIP267.38 sq mi
Water area10.66 sq miThis ZIP10.66 sq mi

Other place names in 99349

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

ZIP codes near 99349

ZIPCityDistance
99357 Royal City, WA 11.2 mi
99321 Beverly, WA 12.7 mi
98950 Vantage, WA 14.1 mi
98944 Sunnyside, WA 15.5 mi
98824 George, WA 24.6 mi
99344 Othello, WA 25.8 mi
98936 Moxee, WA 25.9 mi
99343 Mesa, WA 27.1 mi
99320 Benton City, WA 29.6 mi
98938 Outlook, WA 30.3 mi

Find every ZIP code within 10 miles of 99349 →

Questions about this ZIP code

Where is ZIP code 99349?

99349 is in Mattawa, Washington, in Grant County, part of the Moses Lake, WA micropolitan area. Its published point location is 46.7311, -119.7005.

What county is 99349 in?

99349 lies in Grant County.

What area code is 99349?

Mattawa uses area code 509, from NANPA's telephone records.

What time zone is 99349 in?

99349 uses America/Los_Angeles.

How many people live in 99349?

About 8,143 people live in ZIP code 99349, in 2,388 households, at 30.5 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 99349?

$61,333 a year, against $98,141 across Washington.

What ZIP codes are near 99349?

The closest are 99357 (11.2 mi), 99321 (12.7 mi), 98950 (14.1 mi), 98944 (15.5 mi) and 98824 (24.6 mi).

Is 99349 a PO Box ZIP code?

99349 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “99349 ZIP Code — Mattawa, Washington (Grant County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/99349

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