Fairfield is a town in Spokane County, Washington, home to about 621 people across 0.6 square miles. Its ZIP code is 99012.
Homes sold for a median of $100 per square foot in the three months ending August 2026, a balanced market.
Each card is that ZIP code’s whole market, including any part outside Fairfield. 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)22 miles away |
|---|---|
| Nearest city of 250,000+ | Seattle, WA241 miles away |
Straight-line distances from the center of Fairfield; 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.
Fairfield had 589 residents in the 2020 census, up 19% since 2000.
It’s the 446th largest of 628 towns in Washington by population.
Spokane County grew from 57,542 residents in 1900 to 539,339 in 2020.
Spokane County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 83°F in summer, and winter lows average 23°F. About 28.6 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, Plummer 3 Wsw, ID weather station (13 miles away).
218,708 jobs at 14,426 businesses in Spokane County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
Nearest hospitals
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances.
Pharmacies
Libraries
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.
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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.