The cost of living in Orange County, California, is 52 percent higher than the national average. The cost of living in any area can vary depending on factors such as your career, your average salary, and the real estate market in that area. The housing cost of living index estimates that the cost of housing in Orange is 248.2% of the national average. This makes it one of the most expensive cities in the U.S.
UU. Thornberg said Orange County and the rest of Southern California are relatively cheap compared to other major metropolises in the world.