East San Jose 1911. The 1910 US Census recorded a population of 1,661. Before World War II, East San Jose was a small section of San Jose located on the east banks of the Guadalupe River and west of today's U.S. Route 101. After World War II, the area saw rapid development, along with much of the Santa Clara Valley. East San Jose East San Jose (or East Valley or The Eastside) is the eastern San Jose, California in Silicon Valley, comprising several neighborhoods and including a former city of that name. The area is bounded roughly by Berryessa Rd to the north,
San Jose Hills Hills and Puente Hills to the south. Mammals, birds, reptiles, and amphibians are very diverse in both the San Jose Hills and surrounding San Gabriel Valley. Mammals in the San Jose Hills include bobcats, gray fox, skunks, opossums, squirrels, and other rodents. The bird diversity is exceptional, and notable species include California quail, least Bell's vireo, coastal California gnatcatcher, grasshopper sparrow, southwest willow flycatcher, and red-tailed hawk. Reptiles and amphibians include various lizards and snakes, the California red-legged frog, southwestern arroyo toad, southwestern pond turtle, and other frogs and salamanders. On the most northeastern border, Fairplex (Los Angeles County Fairgrounds)