Welcome to Orange County, California. As the nation’s 5th largest county, Orange County is an extended community of high energy and brilliant optimism, all blended into an incredibly successful region. Everyone loves Orange County’s perfect weather and those 42 fabulous miles of sun, sand and surf. It’s no wonder that this thriving market, with a vital, affluent population of three million, enjoys the 3rd highest median household income* in the U.S. Source: 2005 Claritas Demographics USA *Based on the top 25 U.S. counties in number of households.