Orange County, California is 10 times larger than Broken Arrow, Oklahoma.
Area: 205 km2 calculated
Broken Arrow is a city located in the northeastern part of the State of Oklahoma, primarily in Tulsa County but also with a section of the city in western Wagoner County. It is the largest suburb of Tulsa. Wikipedia
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