The county [Alameda County] was formed on March 25, 1853, from a large portion of Contra Costa County and a smaller portion of Santa Clara County.
The Spanish word alameda means "a place where poplar trees grow," a name which originally was given to the Arroyo de la Alameda (Poplar Grove Creek). The willow and sycamore trees along the banks of the river reminded the early explorers of a road lined with trees, also known as an alameda. [see here]
Much of what is now considered an intensively urban region, with major cities, was developed as a trolley car suburb of San Francisco in the late 19th and early 20th centuries. The historical progression from native American tribal lands to Spanish, then Mexican ranches, then to farms, ranches, and orchards, then multiple city centers and suburbs, is shared with the adjacent and closely associated Contra Costa County.
HISTORY OF ALAMEDA COUNTY CALIFORNIA
From: History of Alameda County, California, by Frank Clinton Merritt, Chicago, Ill.: S.J. Clarke Pub. Co., 1928, 1276 pgs.; pgs.
Adjacent Counties -- Wikipedia
Alameda County was originally hosted by Laurel Egenberger, who was the Web Maven from 1998 - 2004.
Cat Nielsen was Web Maven from 2004 to 2012 - Thanks Cat for a job Well Done
Thank you to the prior Alameda County coordinators for the information and materials they have provided, and for their years of service to Alameda County, CAGenWeb. All of their contributions and dedication are truly appreciated.
Former site: http://www.cagenweb.com/alameda/