Cairns is a former settlement in Placer County, California. Cairns was located 11 miles (17.7 km) northeast of Lincoln.
The Cairns post office operated from 1906 to 1907.
- ^ a b c Durham, David L. (1998). California's Geographic Names: A Gazetteer of Historic and Modern Names of the State. Quill Driver Books. p. 512. ISBN 9781884995149.