Greenfield is a city situated in Monterey County, California, within the United States. Located in the Salinas Valley at an elevation of 289 feet (88 meters), the city sits approximately 3 miles (5 km) east of Carmel Valley Road and 33 miles (53 km) southeast of Salinas. The city was formerly known as Clarke Colony.
The population of Greenfield was recorded at 18,937 in the 2020 census, reflecting an increase from 16,330 in 2010. The city is a member of the Association of Monterey Bay Area Governments and is known for its annual harvest festival as its most prominent public event.