|Elevation||1,309 ft (399 m)|
The O'Neals post office opened in 1887. The name honored Charles O'Neal, merchant and first postmaster. It is the home of Frank Bigelow, elected to represent the California's 5th State Assembly district in the state legislature in 2012.
- U.S. Geological Survey Geographic Names Information System: O'Neals, 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. 811. ISBN 1-884995-14-4.
O'Neal Website: O'Neals, Madera County 
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