Springfield, Illinois is 3.5 times larger than Rialto, California.
Area: 58 km2 calculated
Rialto is a city in San Bernardino County, California, United States. According to Census Bureau estimates, the city had a population of 99,171 in 2010. Wikipedia
Area: 205 km2 calculated
Springfield is the capital of the US state of Illinois and the county seat of Sangamon County with a population of 116,250, making it the sixth most populated city in the state. It is the largest city in central Illinois. Wikipedia