Yao is a city located in Osaka Prefecture, Japan. The city was founded on April 1, 1948. As of 2017, the city has an estimated population of 268,013 and a population density of 6,400 persons per km². The total area is 41.71 km². Yao is home to a general aviation airport, Yao Airport.It is perhaps best known for its Kawachi ondo festival. The first day features dancers in colorful costumes parading along the street. The second day is a huge bon odori on the grounds of Yao high school where hundreds of people gather to dance and celebrate their historic song and dance.TransportationAirportsYao AirportRailwaysWest Japan Railway CompanyYamatoji Line: Shiki Station - Yao Station - Kyuhoji StationOsaka Line: Kyuhojiguchi Station - Kintetsu Yao Station - Kawachi-Yamamoto Station - Takayasu Station - Onji StationShigi Line: Hattorigawa Station - Shigisanguchi StationNishi-Shigi Cable Line: Takayasuyama StationTanimachi Line: Yaominami Station