Contra Costa County is home to 85 named mountains. The highest is Mount Diablo at 1,173 m.
There are 85 named mountains in Contra Costa County. The highest and the most prominent mountain is Mount Diablo.

Yes. Contra Costa County has 85 named mountains. The highest is Mount Diablo at 1,173 m.
The highest mountain in Contra Costa County is Mount Diablo, at 1,173 m.
Contra Costa County has 85 named mountains.
