Henderson, officially the City of Henderson, is a city in Clark County, Nevada. It is the second largest city in Nevada, after Las Vegas, with an estimated population of 265,679 in 2012. The city is part of the Las Vegas metropolitan area, which spans the entire Las Vegas Valley. Wikipedia

The city of Orange is located in Orange County, California. It is approximately 3 miles north of the county seat, Santa Ana. Orange is unusual in that many of the homes in its Old Town District were built prior to 1920. Wikipedia