Rancho Cucamonga, California is 2.1 times larger than Miami Gardens, Florida.
Area: 104 km2 calculated
Rancho Cucamonga is a suburban city in San Bernardino County, California. As of 2014, Rancho Cucamonga's population was 165,775 people.Since 2000, it has had a population growth of 29.53 percent. L. Dennis Michael was elected as the city's mayor on November 2, 2010. Wikipedia
Area: 49 km2 calculated
Miami Gardens is a suburban Miami city located in north-central Miami-Dade County, Florida. Its boundaries stretch from I-95 and NE 2nd Street on the East, to NW 47th and NW 57th Avenues on the West, and from the Broward County line on the North, to 151st Street on the South. Wikipedia