N/A of the households in Contra Costa County (Central)--Concord (South), Walnut Creek (East) & Clayton Cities PUMA, CA reported speaking a non-English language at home as their primary shared language. This does not consider the potential multi-lingual nature of households, but only the primary self-reported language spoken by all members of the household.
Contra Costa County (Central)--Concord (South), Walnut Creek (East) & Clayton Cities PUMA, CA borders Contra Costa County (South)--San Ramon City & Danville Town PUMA, CA, Contra Costa County (Northeast)--Antioch City PUMA, CA, Contra Costa County (West)--Concord (West), Martinez & Pleasant Hill Cities PUMA, CA, Contra Costa County (West)--Walnut Creek (West), Lafayette & Orinda Cities PUMA, CA, and Contra Costa County (North)--Pittsburg & Concord (North) Cities PUMA, CA.