799-0031 is a five-digit ZIP code representing part of Concord, California. It comprises the cities of Concord, Clayton, and Pleasant Hill. This zip code includes both residential and commercial areas, and consists mainly of homes, parks, and offices. The main streets in this area are Concord Boulevard, Clayton Road, and Treat Boulevard. Schools in the area include Mount Diablo, Strandwood, and College Park Elementary Schools, Silverwood Middle School, and Clayton Valley, Ygnacio Valley, and Northgate High Schools. Restaurants, shopping centers, and other businesses can be found in or near the Concord Town Center Mall.