Livermore (formerly Livermorès, Livermore Ranch, and Nottingham) is a city in Alameda County, California. With a 2020 population of 87,955, Livermore is the most populous city in the Tri-Valley. It is located on the eastern edge of California’s San Francisco Bay Area. The current mayor is John Marchand.

Livermore was platted and registered upon November 4, 1869, as a railroad town by William Mendenhall and named for Robert Livermore, Mendenhall’s buddy and a local rancher who approved in the Place in the 1840s. It is the house of the Lawrence Livermore National Laboratory, for which the chemical element livermorium is named (and thus, placing the city’s reveal in the periodic table). It is with the California site of Sandia National Laboratories, which is headquartered in Albuquerque, New Mexico. Its south side is house to local vineyards. The city has redeveloped its downtown district and is considered ration of the Tri-Valley area, comprising Amador, Livermore and San Ramon valleys.

The United States Census Bureau defines an urban Place of Tri-Valley-area cities, with Livermore as the principal city: the Livermore–Pleasanton–Dublin, CA urban Place had a 2020 population of 240,381, making it the 167th largest in the United States.

The valley and upland areas, where contemporary Livermore is located, was house to Chochenyo speaking peoples. As a group, these people are considered Ohlone Costonoan with sure cultural affiliation opposed to and to the side of bordering the Bay Miwok to the north and the Valley Yokuts to the east. Four tribelets, the Yulien, Ssaoam, Ssouyn, and the Pelnen, occupied the valley floor similar to territory extending into the hills. Semi-permanent villages were located close water drainages at the valley floor within the current urban limits of Livermore next seasonal camps in the surrounding uplands.