Winged visitors alien to the area have been casting their large shadows over Contra Costa and Stanislaus counties recently. Preservation group Save Mount Diablo said in a statement Monday they've ...

Low-cost air pollution sensors reveal stark disparities in exposure to extreme heat and air pollution in Contra Costa County, ...

California voters in Contra Costa County are deciding on a host of local races and measures. The races include the 10th Congressional District where incumbent Democratic Rep. Mark DeSaulnier seeks to ...

To address the threat of invasive species and restore the environment, the Contra Costa County Flood Control and Water ...

Winged visitors alien to the area have been casting their large shadows over Contra Costa and Stanislaus counties recently. Preservation group Save Mount Diablo said in a statement Monday they’ve ...

CONTRA COSTA COUNTY — The Contra Costa County District Attorney’s Office charged three men Thursday after their arrests this week on suspicion of multiple charges related to a homicide earlier this ...

The West Contra Costa Unified school board narrowly approved tentative labor agreements with its teachers and other employees ...

WHEREAS, the County of Contra Costa recognizes the Constitution of the United States of America to be the supreme law of the land and all elected officials of Contra Costa County are sworn to uphold ...