Orange County, California is 7 times larger than Orlando, Florida.
Area: 2,064 km2 calculated
Orange County is a county in the U.S. state of California. As of the 2010 census, the population was 3,010,232 making it the third-most populous county in California, the sixth-most populous in the United States, and it more populous than twenty-one U.S. states. Its county seat is Santa Ana. Wikipedia
Area: 295 km2 calculated
Orlando is a major city in the U.S. state of Florida. Located in Central Florida, it is the county seat of Orange County and the center of the Greater Orlando metropolitan area. Wikipedia