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zipcodes.pro — ZIP/99170

99170

ZIP 99170 is Rosalia, Washington, mostly in Whitman County; area code 509; Pacific time.

Type
Standard
Time zone
America/Los_Angeles
County
Whitman +1 more
Metro area
Pullman, WA
Population
926
Coordinates
47.2530, -117.3972
☼ Live from 99170 — Rosalia, WA

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Local time: —

Where 99170 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 99170
  • 🔢 Type 99170 into a pocket calculator and turn it upside down: OLIGG — not quite a word, sorry.
  • ➕ As a number, 99,170 = 2 × 5 × 47 × 211. Its digits add up to 26, a total 2,038 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 11000001101100010
  • 🏠 Its numerical neighbours: 99169 (Ritzville, WA, 47 mi away) and 99171 (Saint John, WA, 16 mi away).
  • 🔄 Backwards, 99170 becomes 07199 — and that is a real ZIP code: Newark, NJ, 2,166 miles away.
  • 👥 24 other ZIP codes are made of exactly the same digits (07199, 09719, 10979, 10997, 17099, 19079, …). The farthest-flung twin is 09719 in APO AE, a military post office, 5,315 miles away.
  • 🧭 Farther north than 96% of all ZIP codes, and farther west than 90%.
  • 🎯1,069 miles northwest of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 99170 and you would come out at 47.25°S, 62.60°E — 379 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 56m of daylight. Shortest: 8h 28m.
  • 📏 At 173.1 square miles of land, 99170 is bigger than 89% of ZIP codes — room for about 131 Central Parks.
🌙 The sky over 99170 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population926This ZIP926
Households423This ZIP423
Housing units487This ZIP487
Median age50.5This ZIP50.5Washington38.3US 38.9
Median household income$58,750This ZIP$58,750Washington$98,141US $80,734
Median home value$238,300This ZIP$238,300Washington$564,600US $332,700
Median gross rent$825This ZIP$825Washington$1,760US $1,413
Bachelor's degree or higher17.8%This ZIP17.8%
Mean commute30.9 minThis ZIP30.9 min
Population density5.3 / sq miThis ZIP5.3 / sq mi

Business and tax activity

Business establishments23This ZIP23
Employees83This ZIP83
Annual payroll$4,869,000This ZIP$4,869,000
Tax returns filed470This ZIP470
Total adjusted gross income$35,391,000This ZIP$35,391,000

Land area

Land area173.10 sq miThis ZIP173.10 sq mi
Water area0.32 sq miThis ZIP0.32 sq mi

Counties 99170 spans

A ZIP code is a mail route and ignores county lines. Shares are by overlapping land area.

CountyShare of this ZIP
Whitman County 57.2%
Spokane County 42.8%

Other place names in 99170

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

ZIP codes near 99170

ZIPCityDistance
99149 Malden, WA 3.8 mi
99039 Waverly, WA 9.8 mi
99158 Oakesdale, WA 11.1 mi
99176 Thornton, WA 11.1 mi
99031 Spangle, WA 11.6 mi
99018 Latah, WA 11.8 mi
99012 Fairfield, WA 13.1 mi
99033 Tekoa, WA 14.1 mi
99004 Cheney, WA 14.9 mi
99104 Belmont, WA 15.8 mi

Find every ZIP code within 10 miles of 99170 →

Questions about this ZIP code

Where is ZIP code 99170?

99170 is in Rosalia, Washington, in Whitman County, part of the Pullman, WA micropolitan area. Its published point location is 47.2530, -117.3972.

What county is 99170 in?

99170 spans 2 counties: Whitman County and Spokane County. Most of it falls in Whitman County, measured by overlapping land area — the county holding the most land in a ZIP code is not always the one holding the most residents.

What area code is 99170?

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

What time zone is 99170 in?

99170 uses America/Los_Angeles.

How many people live in 99170?

About 926 people live in ZIP code 99170, in 423 households, at 5.3 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 99170?

$58,750 a year, against $98,141 across Washington.

What ZIP codes are near 99170?

The closest are 99149 (3.8 mi), 99039 (9.8 mi), 99158 (11.1 mi), 99176 (11.1 mi) and 99031 (11.6 mi).

Is 99170 a PO Box ZIP code?

99170 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “99170 ZIP Code — Rosalia, Washington (Whitman County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/99170

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