Pacific Vista

Pacific Vista is the primary setting in the book and TV series of All About Us: Life in the O.C. The book states its location is in the affluent seaside town in Orange County, California.
It is the hometown of the Pacific Vista Girls in the book series. Most of the residents seem to be of middle or upper-class income range in wages and are described as overachievers gifted with success and intelligence while pressuring their youth to match that perfection.
Most of the town's traits were passed on in the television adaption, though now it's defined as a college town with its own newspaper and university.