Chula Vista, California is 1,765,893 times larger than Jackson, Mississippi.
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: 0 km2 calculated
Jackson is the capital and since 1944 the largest city of the U.S. state of Mississippi. Located south of the Yazoo River, it is considered to be at the southern border of the Mississippi Delta and is one of two county seats of Hinds County, with the city of Raymond being the other. Wikipedia