|Elevation||-60 m (-197 ft)|
Mortmar is an unincorporated community in Riverside County, California. It lies at an elevation of -197 feet (-60 m). Mortmar is located on the Southern Pacific Railroad, 22 miles (35.4 km) southeast of Indio.
- U.S. Geological Survey Geographic Names Information System: Mortmar, California
- Durham, David L. (1998). California's Geographic Names: A Gazetteer of Historic and Modern Names of the State. Clovis, Calif.: Word Dancer Press. p. 1446. ISBN 1-884995-14-4.
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