Rock City, California
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|County||Contra Costa County|
|Elevation||1,545 ft (471 m)|
Rock City is an Unincorporated community in Contra Costa County, California, United States. It lies at an elevation of 1,545 feet (471 m). The ZIP Code is 94528. The community is inside area code 925.
- "Rock City (Contra Costa County, California)". Geographic Names Information System. United States Geological Survey. Retrieved May 10, 2014.
- "FIPS55 Data: California". FIPS55 Data. United States Geological Survey. February 23, 2006. Archived from the original on June 18, 2006. Retrieved May 10, 2014. External link in
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