Contra Costa County – 94563 – Orinda – CA – 1/35
Contra Costa County – 94563 – Orinda – CA – 1/35
Cities: Orinda, CA (73.17%), Lafayette, CA (1.22%)
County: Contra Costa County, CA
Estimated zip code population in 2011: 17,595
Zip code population in 2010: 17,672
Zip code population in 2000: 17,944