Ione is a town in Pend Oreille County, Washington, home to about 409 people across 0.5 square miles. Its ZIP code is 99139.
Homes sold for a median of $143 per square foot in the three months ending August 2026, a seller’s market.
Each card is that ZIP code’s whole market, including any part outside Ione. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
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| Nearest major airport | Spokane International Airport (GEG)78 miles away |
|---|---|
| Nearest city of 250,000+ | Seattle, WA240 miles away |
Straight-line distances from the center of Ione; driving is longer.
Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.
Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.
Ione had 428 residents in the 2020 census, down 11% since 2000.
It’s the 499th largest of 628 towns in Washington by population.
Pend Oreille County grew from 6,363 residents in 1920 to 13,401 in 2020.
Pend Oreille County, 1920–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 85°F in summer, and winter lows average 21°F. About 28.2 inches of rain and melted snow fall in a typical year, with about 55 inches of snow.
Source: NOAA 1991–2020 climate normals, Boundary Dam, WA weather station (18 miles away).
1,655 jobs at 258 businesses in Pend Oreille County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
3 doctors and other health care providers list an office in Ione.
Nearest hospitals
Providers with an office here
| Primary care doctors | 1 |
|---|---|
| Nurse practitioners and physician assistants | 2 |
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances; providers from the CMS National Plan and Provider Enumeration System (NPPES), by practice address and primary specialty.
Parks (1 nearby)
Grocery stores (1 nearby)
Museums
Counts are within about 1 mile of the center of town.
Source: Map data © OpenStreetMap contributors (openstreetmap.org/copyright), as mapped by volunteers; it can miss places or include closed ones.
Public schools here are run by Selkirk School District. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Selkirk Middle SchoolIone | 6–8 | 52 | Public | 5.5 mi |
| Selkirk High SchoolIone | 9–12 | 76 | Public | 5.5 mi |
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools. Listed by address; we don’t rate schools.
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Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.