The city of Orange is located in Orange County, California. It is approximately 3 miles (4.8 kilometers) 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; whereas many other cities in the region demolished such houses in the 1960s, Orange decided to preserve them. The small affluent city of Villa Park is surrounded by the city of Orange. The population was 136,416 at the 2010 census.