Home > WA > Whitman County > Colfax > Zip 99111

Zip Code 99111 — Colfax, WA

99111 is a ZIP Code associated with Colfax, WA, located within Whitman. The postal region supports an estimated population of 4,038 residents across Data Pending housing units, with a population density of 5.1 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (46.862810, -117.441320)

Data MetricLocal Statistic
Postal / Zip Code99111
Primary CityColfax
State / ProvinceWA
CountyWhitman
Total Population4,038
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density5.1 people/sq mi
TimezoneAmerica/Los_Angeles

How 99111 Compares

MetricZIP 99111Whitman CountyWA State Average
Population4,03847,2847,816,021
Median IncomeData PendingN/AN/A
Population Density5.1 /sq mi----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 99102Albion10.3 mi495N/A
Zip 99174Steptoe10.7 mi69N/A
Zip 99163Pullman14.1 mi34,022N/A
Zip 99161Palouse14.8 mi1,435N/A
Zip 99130Garfield15.3 mi693N/A

Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →