Elk Grove, California is 27% larger than Richmond, California.
Area: 109 km2 calculated
Elk Grove is a city in Sacramento County, California, located just south of the state capital of Sacramento. It is part of the Sacramento–Arden-Arcade–Roseville Metropolitan Statistical Area. As of 2014, the population of the city was estimated at 160,688. Wikipedia
Area: 86 km2 calculated
Richmond is a city in western Contra Costa County, California, United States. The city was incorporated on August 7, 1905. Wikipedia