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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/99140

99140

ZIP 99140 is Keller, Washington, in Ferry County; area code 509; Pacific time.

Type
Standard
Time zone
America/Los_Angeles
County
Ferry
Metro area
none
Population
486
Coordinates
48.1114, -118.6462
☼ Live from 99140 — Keller, WA

Weather right now

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Local time: —

Where 99140 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 99140
  • 🔢 Type 99140 into a pocket calculator and turn it upside down: OhIGG — not quite a word, sorry.
  • ➕ As a number, 99,140 = 2 × 2 × 5 × 4957. Its digits add up to 23, a total 2,533 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 11000001101000100
  • 🏠 Its numerical neighbours: 99139 (Ione, WA, 76 mi away) and 99141 (Kettle Falls, WA, 47 mi away).
  • 🔄 Backwards, 99140 becomes 04199, which is not a ZIP code at all.
  • 👥 22 other ZIP codes are made of exactly the same digits (01949, 09419, 10949, 10994, 19049, 19094, …). The farthest-flung twin is 09419 in FPO AE, a military post office, 4,314 miles away.
  • 🧭 Farther north than 97% of all ZIP codes, and farther west than 92%.
  • 🎯1,145 miles northwest of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 99140 and you would come out at 48.11°S, 61.35°E — 413 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 16h 04m of daylight. Shortest: 8h 21m.
  • 📏 At 443.1 square miles of land, 99140 is bigger than 97% of ZIP codes — room for about 336 Central Parks.
🌙 The sky over 99140 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population486This ZIP486
Households216This ZIP216
Housing units246This ZIP246
Median age51.5This ZIP51.5Washington38.3US 38.9
Median household income$53,529This ZIP$53,529Washington$98,141US $80,734
Median home value$140,700This ZIP$140,700Washington$564,600US $332,700
Median gross rent$450This ZIP$450Washington$1,760US $1,413
Bachelor's degree or higher12.3%This ZIP12.3%
Mean commute21.8 minThis ZIP21.8 min
Population density1.1 / sq miThis ZIP1.1 / sq mi

Business and tax activity

Business establishments7This ZIP7
Employees26This ZIP26
Annual payroll$1,313,000This ZIP$1,313,000
Tax returns filed150This ZIP150
Total adjusted gross income$6,887,000This ZIP$6,887,000

Land area

Land area443.11 sq miThis ZIP443.11 sq mi
Water area15.25 sq miThis ZIP15.25 sq mi

Other place names in 99140

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

ZIP codes near 99140

ZIPCityDistance
99138 Inchelium, WA 14.4 mi
99116 Coulee Dam, WA 14.9 mi
99124 Elmer City, WA 16.1 mi
99147 Lincoln, WA 19.4 mi
99155 Nespelem, WA 21.6 mi
99129 Fruitland, WA 23.7 mi
99133 Grand Coulee, WA 23.7 mi
99123 Electric City, WA 24.5 mi
99137 Hunters, WA 24.6 mi
99185 Wilbur, WA 26.7 mi

Find every ZIP code within 10 miles of 99140 →

Questions about this ZIP code

Where is ZIP code 99140?

99140 is in Keller, Washington, in Ferry County. Its published point location is 48.1114, -118.6462.

What county is 99140 in?

99140 lies in Ferry County.

What area code is 99140?

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

What time zone is 99140 in?

99140 uses America/Los_Angeles.

How many people live in 99140?

About 486 people live in ZIP code 99140, in 216 households, at 1.1 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 99140?

$53,529 a year, against $98,141 across Washington.

What ZIP codes are near 99140?

The closest are 99138 (14.4 mi), 99116 (14.9 mi), 99124 (16.1 mi), 99147 (19.4 mi) and 99155 (21.6 mi).

Is 99140 a PO Box ZIP code?

99140 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “99140 ZIP Code — Keller, Washington (Ferry County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/99140

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