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Where 99155 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.
- 🔢 Type 99155 into a pocket calculator and turn it upside down: SSIGG — not quite a word, sorry.
- ➕ As a number, 99,155 = 5 × 7 × 2833. Its digits add up to 29, a total 1,296 other ZIP codes share.
- 💾In binary, the way a computer stores it:
11000001101010011 - 🏠 Its numerical neighbours: 99154 (Mohler, WA, 70 mi away) and 99156 (Newport, WA, 84 mi away).
- 🔄 Backwards, 99155 becomes 55199, which is not a ZIP code at all.
- 👥 12 other ZIP codes are made of exactly the same digits (15959, 19559, 19955, 55919, 55991, 59915, …). The farthest-flung twin is 19955 in Kenton, DE, 2,219 miles away.
- 🧭 Farther north than 98% of all ZIP codes, and farther west than 93%.
- 🎯1,166 miles northwest of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 99155 and you would come out at 48.31°S, 60.99°E — 425 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
- ☀Longest day of the year: 16h 06m of daylight. Shortest: 8h 19m.
- 📏 At 305.2 square miles of land, 99155 is bigger than 95% of ZIP codes — room for about 232 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 1,009This ZIP1,009 |
|---|---|
| Households | 362This ZIP362 |
| Housing units | 413This ZIP413 |
| Median age | 35.6This ZIP35.6Washington38.3US 38.9 |
| Median household income | $50,909This ZIP$50,909Washington$98,141US $80,734 |
| Median home value | $143,100This ZIP$143,100Washington$564,600US $332,700 |
| Median gross rent | $423This ZIP$423Washington$1,760US $1,413 |
| Bachelor's degree or higher | 12.4%This ZIP12.4% |
| Mean commute | 17.6 minThis ZIP17.6 min |
| Population density | 3.3 / sq miThis ZIP3.3 / sq mi |
Business and tax activity
| Business establishments | 9This ZIP9 |
|---|---|
| Employees | 67This ZIP67 |
| Annual payroll | $3,647,000This ZIP$3,647,000 |
Land area
| Land area | 305.23 sq miThis ZIP305.23 sq mi |
|---|---|
| Water area | 3.13 sq miThis ZIP3.13 sq mi |
Other place names in 99155
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 99155
| ZIP | City | Distance |
|---|---|---|
98841 | Omak, WA | 13.8 mi |
99116 | Coulee Dam, WA | 20.8 mi |
99124 | Elmer City, WA | 21.6 mi |
99140 | Keller, WA | 21.6 mi |
99133 | Grand Coulee, WA | 21.7 mi |
98840 | Okanogan, WA | 23.4 mi |
98849 | Riverside, WA | 24.4 mi |
99166 | Republic, WA | 25.8 mi |
98855 | Tonasket, WA | 27.5 mi |
99138 | Inchelium, WA | 28.8 mi |
Find every ZIP code within 10 miles of 99155 →
Questions about this ZIP code
Where is ZIP code 99155?
99155 is in Nespelem, Washington, in Okanogan County. Its published point location is 48.3115, -119.0064.
What county is 99155 in?
99155 lies in Okanogan County.
What area code is 99155?
Nespelem uses area code 509, from NANPA's telephone records.
What time zone is 99155 in?
99155 uses America/Los_Angeles.
How many people live in 99155?
About 1,009 people live in ZIP code 99155, in 362 households, at 3.3 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 99155?
$50,909 a year, against $98,141 across Washington.
What ZIP codes are near 99155?
The closest are 98841 (13.8 mi), 99116 (20.8 mi), 99124 (21.6 mi), 99140 (21.6 mi) and 99133 (21.7 mi).
Is 99155 a PO Box ZIP code?
99155 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “99155 ZIP Code — Nespelem, Washington (Okanogan County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/99155
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/99155.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.