Clayton Historical Society
- History, biographies, Clayton Chronicles newsletter and links to Bugsworth, England as well as local historical societies.
- http://www.claytonhistory.org/

SparklePets
- Provides pet sitting services in eastern Contra Costa County. Prices and philosophy.
- http://www.sparklepets.com/

Kimberly Morucci - Intero Real Estate Service
- Homes for sale and area information for Clayton, Walnut Creek, and Concord, CA. Real estate buying and selling tips, relocation help, and mortgage information.
- http://www.kimmorucci.com

Clayton California 94517
- Government, business, schools, organizations, entertainment, history, and community highlights.
- http://veenet.value.net/~littlefield/

Camp Four Paws Day Care and Kenneling Services
- Philosophy, facility, activities, eligibility, photos, services & fees, adoption center, doggie links, guestbook.
- http://www.campfourpaws.com

Clayton Community Library
- Location, hours, exhibits, summer reading program, book renewal by phone, news and community links.
- http://www.claytonlibrary.org/

Webspin.net
- Web design and developing, search optimizations, e-commerce, marketing and consulting.
- http://www.webspin.net

Better Homes Realty
- Clayton real estate.
- http://www.bhrclayton.com/

City of Clayton
- Official city site with brief demographic and government information.
- http://www.ci.clayton.ca.us/