San Leandro (Spanish for "St. Leander") is a city in Alameda County, California, United States.

[2] Both land grants were located along El Camino Viejo, modern 14th Street / State Route 185.

The smaller land grant, Rancho San Leandro, of approximately 9,000 acres (3,600 ha), was given to José Joaquín Estudillo in 1842.

The larger, Rancho San Antonio, of approximately 44,000 acres (18,000 ha), was given to another Spanish soldier, Don Luis Maria Peralta, in 1820.

In the lower elevations of the city, an upper regionally contained aquifer is located 50 to 100 feet (15 to 30 m) below the surface.

Shallow groundwater generally flows to the west, from the foothills toward San Francisco Bay.

Contamination by gasoline, volatile organic compounds and some heavy metals has been recorded in a number of these lower-elevation areas.

Maxwell House operated a coffee roasting plant, where the Yuban brand was produced from 1949 until 2015, when it was closed as part of a cost-cutting plan instituted by parent company Kraft Foods.

"[34] San Leandro came "out of the downturn like few places around, attracting tech startups, artists and brewers to a onetime traditional industrial hub.

"[35] In January 2011, Cassidy and Dr. J. Patrick Kennedy, a San Leandro resident and the president and founder of OSIsoft, one of the city's largest employers, "began developing the public-private partnership that would become Lit San Leandro,"[36] a high speed, fiber optic broadband network.

In October 2011, the city approved the license agreement that allowed the installation of the fiber-optic cables in the existing conduits under San Leandro streets.

[37] In 2012, San Leandro was awarded a $2.1 million grant from the U.S. Economic Development Administration to add 7.5 miles to the network.

[38] By 2014, the network expansion was completed, bringing the total length of fiber in the city to over 18 miles.

Adjacent Lake Chabot Regional Park is popular for its scenic hiking trails, camping, and fishing.

Although located in Castro Valley,[46] the Fairmont Ridge Staging Area is the location of the Children's Memorial Grove, which consists of an Oak grove and a stone circle, with annual plaques listing the names of all children who have died as a result of violence in Alameda County.

San Leandro is served by the Interstate 880, 580 and 238 freeways connecting to other parts of the Bay Area.

Public transportation is provided by the Bay Area Rapid Transit BART District with the San Leandro and Bayfair stations serving the city.

San Leandro LINKS provides free bus shuttle service for the western part of the city to the San Leandro BART station and AC Transit is the local bus provider for the city.

[46] Fairmont Hospital, also located close by, is an Acute Rehabilitation, Neuro-Respiratoy and HIV care center.

[52] Also present within the city are Kindred Hospital – San Francisco Bay Area, a long-term acute care facility, and the sub-acute unit of the nursing home care facility, Providence Group, Inc's All Saint's Subacute.