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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/99301

99301

ZIP 99301 is in Pasco, Washington, in Franklin County; area code 509; Pacific time. Pasco has 2 ZIP codes; the other is 99302.

Type
Standard
Time zone
America/Los_Angeles
County
Franklin
Population
87,044
Coordinates
46.3778, -118.9517
☼ Live from 99301 — Pasco, WA

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Local time: —

Where 99301 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 99301
  • 🔢 Type 99301 into a pocket calculator and turn it upside down: IOEGG — not quite a word, sorry.
  • ➕ As a number, 99,301 = 199 × 499. Its digits add up to 22, a total 2,607 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 11000001111100101
  • 🏠 Its numerical neighbours: 99260 (Spokane, WA, 114 mi away) and 99302 (Pasco, WA, 12 mi away).
  • 🔄 Backwards, 99301 becomes 10399, which is not a ZIP code at all.
  • 👥 23 other ZIP codes are made of exactly the same digits (09139, 10993, 19039, 19093, 19390, 19903, …). The farthest-flung twin is 09139 in APO AE, a military post office, 5,140 miles away.
  • 🧭 Farther north than 94% of all ZIP codes, and farther west than 92%.
  • 🎯1,119 miles northwest of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 99301 and you would come out at 46.38°S, 61.05°E — 472 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 48m of daylight. Shortest: 8h 35m.
  • 📏 At 486.3 square miles of land, 99301 is bigger than 97% of ZIP codes — room for about 369 Central Parks.
🌙 The sky over 99301 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population87,044This ZIP87,044
Households27,093This ZIP27,093
Housing units28,270This ZIP28,270
Median age30.6This ZIP30.6Washington38.3US 38.9
Median household income$87,951This ZIP$87,951Washington$98,141US $80,734
Median home value$385,500This ZIP$385,500Washington$564,600US $332,700
Median gross rent$1,228This ZIP$1,228Washington$1,760US $1,413
Bachelor's degree or higher21.9%This ZIP21.9%
Mean commute22.5 minThis ZIP22.5 min
Population density179.0 / sq miThis ZIP179.0 / sq mi

Business and tax activity

Business establishments1,794This ZIP1,794
Employees21,425This ZIP21,425
Annual payroll$1,130,680,000This ZIP$1,130,680,000
Tax returns filed37,870This ZIP37,870
Total adjusted gross income$2,677,585,000This ZIP$2,677,585,000

Land area

Land area486.29 sq miThis ZIP486.29 sq mi
Water area13.88 sq miThis ZIP13.88 sq mi

Other place names in 99301

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

ZIP codes near 99301

ZIPCityDistance
99330 Eltopia, WA 8.9 mi
99302 Pasco, WA 12.0 mi
99323 Burbank, WA 13.6 mi
99336 Kennewick, WA 15.6 mi
99354 Richland, WA 16.9 mi
99343 Mesa, WA 18.2 mi
99352 Richland, WA 18.6 mi
99326 Connell, WA 20.8 mi
99338 Kennewick, WA 20.9 mi
99353 West Richland, WA 21.3 mi

Find every ZIP code within 10 miles of 99301 →

Questions about this ZIP code

Where is ZIP code 99301?

99301 is in Pasco, Washington, in Franklin County, part of the Kennewick-Richland, WA metropolitan area. Its published point location is 46.3778, -118.9517.

What county is 99301 in?

99301 lies in Franklin County.

What area code is 99301?

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

What time zone is 99301 in?

99301 uses America/Los_Angeles.

How many people live in 99301?

About 87,044 people live in ZIP code 99301, in 27,093 households, at 179.0 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 99301?

$87,951 a year, against $98,141 across Washington.

What ZIP codes are near 99301?

The closest are 99330 (8.9 mi), 99302 (12 mi), 99323 (13.6 mi), 99336 (15.6 mi) and 99354 (16.9 mi).

Is 99301 a PO Box ZIP code?

99301 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “99301 ZIP Code — Pasco, Washington (Franklin County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/99301

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