Chula Vista, California is 2.3 times larger than Manhattan (NYC borough).
Area: 132 km2 calculated
Chula Vista is the second largest city in the San Diego metropolitan area, the seventh largest city in Southern California, the fourteenth largest city in the state of California, and the 76th-largest city in the United States. The population was 243,916 as of the 2010 census. Wikipedia
Area: 59 km2 calculated
Manhattan is the most densely populated of the five boroughs of New York City. The borough is coterminous with New York County, an original county of the U.S. state of New York. Wikipedia