Endicott is a town in Whitman County, Washington, United States. The population was 289 at the 2010 census.
Endicott was platted in 1882 and named for William Endicott Jr of the Oregon Improvement Company. Endicott was officially incorporated on February 11, 1905.
The population of Endicott peaked in 1920, and has decreased since. This was caused by improved farm technology, allowing more area to be farmed by the same number of people. The decrease in population has affected the economics of the town: in the 1950s, the town had numerous stores, while in 2011, the town only has one store. The Endicott High School shut down in 1987: the class of 1986 only had one student.