Chilcoot is an unincorporated community in Plumas County, California. It lies at an elevation of . Chilcoot is located east of Portola.
For census purposes, Chilcoot is included in the census-designated place (CDP) of Chilcoot-Vinton.
The Chilcoot post office opened in 1898, was moved into Lassen County in 1909, and moved back into Plumas County in 1910. Chilcoot may be a Shawnee language name.
This region experiences warm (but not hot) and dry summers, with no average monthly temperatures above 71.6 ðF. According to the Köppen Climate Classification system, Chilcoot has a warm-summer Mediterranean climate, abbreviated "Csb" on climate maps.
It is in the Sierra-Plumas Joint Unified School District.