Plummer is a city in Benewah County, Idaho, United States. The population was 990 at the 2000 census. It is the largest city within the Coeur d'Alene Reservation.
Plummer is located at 47°20′0″N 116°53′4″W / 47.333333°N 116.88444°W / 47.333333; -116.88444 (47.333423, -116.884393).
According to the United States Census Bureau, the city has a total area of 1.1 square miles (2.9 km²), all of it land.