Farmington is a town in Whitman County, Washington, United States.

[2] According to the United States Census Bureau, the town has a total area of 0.34 square miles (0.88 km2), all of it land.

24.1% of all households were made up of individuals, and 7.5% had someone living alone who was 65 years of age or older.

There were 64 housing units at an average density of 186.3 per square mile (72.7/km2).

The racial makeup of the town was 98.04% White, 1.31% Native American and 0.65% Asian.

32.1% of all households were made up of individuals, and 16.1% had someone living alone who was 65 years of age or older.

About 8.0% of families and 7.9% of the population were below the poverty line, including none of those under the age of eighteen and 5.9% of those 65 or over.