Town Chart.

← Look up another ZIP code · All towns in Washington

ZIP code 99128

Farmington, WA · Whitman County

About ZIP code 99128

  • ZIP code 99128 is in Farmington, Whitman County, Washington.
  • About 259 people live in it, which is 1.7 people per square mile.
  • It also reaches into Latah County.
  • Time zone: Pacific Standard Time.
  • The middle of the ZIP code is at 47.100, -117.085.

A ZIP code is a mail delivery area, not a town border, and one ZIP code can cover parts of several towns. To check a single address, use the US Postal Service lookup.

Farmington, WA

ZIP code 99128 is the post office name for Farmington, WA. 140 people live in Farmington. Typical household income is $53,750. A typical home costs $334,600.

  • Stronger than most towns on: Long, healthy lives, Home internet and working from home and Property taxes.
  • Weaker than most towns on: Clean air and low disaster risk, Jobs and income and Pleasant weather for being outdoors.

See all figures for Farmington

Nearby ZIP codes

ZIP code list from SimpleMaps US Zips. Population is a US Census Bureau estimate. These are estimates, so check official sources before you decide.