ZIP code 99111: Colfax, WA
99111 is a ZIP code in Colfax, Washington, mainly in Whitman County, part of the Pullman, WA micro area. About 4,038 people live here.
- Population
- 4,038
- Median household income
- $73,393
- Typical home value
- $318,100+1.1% in 12 months
- Median rent
- $953gross, per month
- Median age
- 41.8
- Homeowners
- 72.9%of occupied homes
Shaded: ZIP code 99111's area. Click anywhere on the map to see which ZIP code it's in.
ZIP codes within 10 milesWithin 25 miles
ZIP code 99111 details
| City | Colfax |
|---|---|
| State | Washington |
| County | Whitman County |
| Metro area | Pullman, WA |
| Time zone | Pacific Time (UTC−8), observes daylight saving time |
| Type | Standard (delivery area) |
| Land area | 307 sq mi, plus 0.1 sq mi of water |
| Population density | 13 people per sq mi |
| Bachelor's degree or higher | 30.5% of adults 25+ |
| Average commute | 17.8 minutes |
| Center coordinates | 46.85589, -117.45115 |
Median rent in 99111 by bedrooms
| Size | Median gross rent |
|---|---|
| 1 bedroom | $575/mo |
| 2 bedrooms | $981/mo |
| 3 bedrooms | $977/mo |
Gross rent includes utilities paid by the tenant. ACS 2020–2024; sizes with too few rentals to estimate are left out.
ZIP codes near 99111
| ZIP code | City | Distance | Population |
|---|---|---|---|
| 99102 | Albion, WA | 10.5 mi | 495 |
| 99174 | Steptoe, WA | 11.4 mi | 69 |
| 99163 | Pullman, WA | 14.0 mi | 34,022 |
| 99161 | Palouse, WA | 14.7 mi | 1,435 |
| 99164 | Pullman, WA | 15.5 mi | — |
| 99125 | Endicott, WA | 15.8 mi | 611 |
| 99130 | Garfield, WA | 16.0 mi | 693 |
| 99176 | Thornton, WA | 16.4 mi | 163 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Buying a home in 99111?
A typical home in ZIP code 99111 is worth about $318,100 (Zillow Home Value Index). The median household here earns $73,393 a year. See what buying here would cost per month, with Washington average taxes and insurance filled in.
Monthly payment for a $318,100 homeWhat can a $73,393 income afford?Rental property numbers
About ZIP code 99111
What city is ZIP code 99111?
ZIP code 99111 is in Colfax, WA, in Whitman County.
What county is ZIP code 99111 in?
99111 is mainly in Whitman County, Washington.
What is the population of ZIP code 99111?
About 4,038 people live in ZIP code 99111, according to the American Community Survey 2020–2024 5-year estimates.
What time zone is ZIP code 99111 in?
99111 is in Pacific Time (UTC−8). It observes daylight saving time.