Winston-Salem, North Carolina is 4.7 times larger than Antioch, California.
Area: 74 km2 calculated
Antioch is a city in Contra Costa County, California, United States. Located in the East Bay region of the San Francisco Bay Area along the San Joaquin-Sacramento River Delta, it is a suburb of San Francisco and Oakland. Wikipedia
Area: 348 km2 calculated
Winston-Salem is a city in and the county seat of Forsyth County, North Carolina, United States. With a 2013 estimated population of 236,441, it is the second largest municipality in the Piedmont Triad region and the fourth largest city in the state. Wikipedia