California law makes no distinction between "city" and "town", and municipalities may use either term in their official names. The first municipalities to incorporate were Benicia and San Jose on March 27, 1850, while the most recent was Oakley on July 1, 1999.
California law does not distinguish between "city" and "town"; all are considered municipalities with the same rights. The first two to form were Benicia and San Jose on March 27, 1850, whereas Oakley became a municipality most recently on July 1, 1999.