Keller is a community in Ferry County, Washington, home to about 212 people across 9.5 square miles. Its ZIP code is 99140.
Homes sold for a median of $137 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 Keller. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Keller’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | Spokane International Airport (GEG)59 miles away |
|---|---|
| Nearest city of 250,000+ | Seattle, WA174 miles away |
Straight-line distances from the center of Keller; 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.
Keller had 229 residents in the 2020 census, down 2% since 2010.
It’s the 553rd largest of 628 towns in Washington by population.
Ferry County grew from 4,562 residents in 1900 to 7,178 in 2020.
Ferry County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 88°F in summer, and winter lows average 23°F. About 11.2 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, Coulee Dam 1 Sw, WA weather station (17 miles away).
855 jobs at 145 businesses in Ferry County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
1 doctors and other health care providers list an office in Keller.
Nearest hospitals
Providers with an office here
| Mental health providers | 1 |
|---|---|
| Pharmacies | 1 |
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.
Public schools here are run by Keller School District. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Keller Elementary SchoolKeller | K–6 | 40 | Public | 4.1 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.