Gilroy is a city in Northern California's Santa Clara County, south of Morgan Hill and north of San Benito County. Gilroy is the southernmost city in the San Francisco Bay Area, with a population of 59,520 as of the 2020 Census. Gilroy's origins lie in the village of San Ysidro that grew in the early 19th century out of Rancho San Ysidro, granted to Californio ranchero Ygnacio Ortega in 1809.