Colfax is a city in Whitman County, Washington, home to about 2,708 people across 3.8 square miles. Its ZIP code is 99111.
Homes sold for a median of $184 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 Colfax. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Colfax’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)52 miles away |
|---|---|
| Closer regional airport | Pullman-Moscow Regional Airport (PUW)15 miles away |
| Nearest city of 250,000+ | Seattle, WA239 miles away |
Straight-line distances from the center of Colfax; 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.
Colfax had 2,782 residents in the 2020 census, down 2% since 2000.
It’s the 273rd largest of 628 towns in Washington by population.
Whitman County grew from 25,360 residents in 1900 to 47,973 in 2020.
Whitman County, 1900–2020
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 25°F. About 20.5 inches of rain and melted snow fall in a typical year, with about 33 inches of snow.
Source: NOAA 1991–2020 climate normals, Pullman 2 Nw, WA weather station (12 miles away).
11,417 jobs at 873 businesses in Whitman County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
52 doctors and other health care providers list an office in Colfax.
Nearest hospitals
Providers with an office here
| Primary care doctors | 14 |
|---|---|
| Specialist doctors | 2 |
| Dentists | 7 |
| Nurse practitioners and physician assistants | 14 |
| Mental health providers | 2 |
| Physical and occupational therapists | 12 |
| Chiropractors | 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.
Parks (7 nearby)
Grocery stores (1 nearby)
Libraries (1 nearby)
Counts are within about 1.5 miles 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.
Established in 1870.
Notable people born here
Source: Wikidata (wikidata.org), the free knowledge base; people are listed by place of birth.
Public schools here are run by Colfax School District. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Leonard M Jennings ElementaryColfax | K–6 | 270 | Public | 1.1 mi |
| Colfax High SchoolColfax | 7–12 | 263 | Public | 0.9 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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Shares ZIP codes with Steptoe.
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.