| Official Name: | Red Mountain, California |
| Pushpin Map: | California#USA |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | California |
| Subdivision Type2: | County |
| Subdivision Name2: | San Bernardino |
| Population As Of: | 2010[1] |
| Population Total: | 131 |
| Timezone: | Pacific (PST) |
| Utc Offset: | -8 |
| Timezone Dst: | PDT |
| Utc Offset Dst: | -7 |
| Elevation Ft: | 3,401 |
| Coordinates: | 35.3583°N -117.6167°W |
| Postal Code Type: | ZIP code |
| Postal Code: | 93558 |
| Area Code Type: | Area codes |
| Area Code: | 442/760 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 1661291[2] |
Red Mountain, formerly known as Osdick, is an unincorporated community in San Bernardino County, California, United States.
Red Mountain was established in 1919 as Osdick, a silver mine boom town[3] Red Mountain is 32miles south-southwest of Trona, part of the mining district of Randsburg, California and Johannesburg, California.
Red Mountain has a post office with ZIP code 93558.[4] The post office opened under the name Osdick in 1922 and changed its name to Red Mountain in 1929.[5]
In 2022, the community received a $1.5 million grant to clean sediment of arsenic from historic gold and silver mining from the kelly mine complex[6]