Rock City, California
Rock City: Located within Mount Diablo State Park in Contra Costa County at an elevation of 1,545 feet, this area rests on the mountain's southern slopes.
About
Rock City is a city located in the county of Contra Costa in the U.S. state of California.
Quick Facts about Rock City
| State | California (United States) |
| County | Contra Costa County |
| Latitude & Longitude | 37.8497,-121.9355 |
| Time Zone | America/Los_Angeles |
| Local time | 05:52:08 (8th November 2026) |
Geography
Rock City is located at 37°50'59"N 121°56'8"W (37.8496500, -121.9355100).
Rock City map
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Nearby Schools and Colleges
Schools and campuses linked to Rock City, CA. Select a name to open its map and contact details.
| Code | Name | City | ZIP |
|---|---|---|---|
| 481474 | J D Academy of Salon and Spa | Danville (CA) | 94526 |
Nearby Transit Stations (49)
Rail and bus stations connected to Rock City, CA. Select a station to open its map and address details.
| Code | Name | Address | Type |
|---|---|---|---|
| DBP | Dublin-Pleasanton, California | 5801 Owens Drive | BUS |
| ACA | Antioch–Pittsburg | 100 I Street | RAIL |
| PLS | Pleasanton, CA | 4950 Pleasanton Avenue | RAIL |
| LIV | Livermore, California | 2500 Railroad Avenue | BUS |
| OAC | Oakland Coliseum station | 700 73rd Avenue | RAIL |
Closest post offices linked to Rock City.
| Post Office Name | City | ZIP |
|---|---|---|
| Diabl Post Office | Diablo (CA) | 94528 |
Other cities in Contra Costa County
Cities, towns, neighborhoods & other populated places in Contra Costa County , CA. (more)
| City Name | Population | Title |
|---|---|---|
| Concord | 128,544 | The third most populous city in Contra Costa County, California. |
| Antioch | 111,605 | The most populous city in Contra Costa County, California. |
| Richmond | 110,038 | The most populous city in Contra Costa County, California. |
| San Ramon | 82,865 | A city in Contra Costa County, California. |
| Pittsburg | 72,622 | A city in Contra Costa County, California. |
| Walnut Creek | 69,936 | The fifth most populous city in Contra Costa County, California. |
| Brentwood | 65,017 | The most populous city in Contra Costa County, California. |
| Danville | 44,883 | Town in Contra Costa County, California |
| Oakley | 42,710 | A city in Contra Costa County, California. |
| Martinez | 38,027 | City in Contra Costa County, California, USA |
| Pleasant Hill | 34,781 | City in Contra Costa County, California, USA |
| San Pablo | 30,779 | City in Contra Costa County, California, United States |
| Hercules | 26,221 | City in western Contra Costa County, California |
| Lafayette | 25,992 | City in California |
| El Cerrito | 25,403 | City in Contra Costa County, California, United States |
| Bay Point | 21,534 | Census designated place in California |