Indio is a city in Riverside County, California, United States, in the Coachella Valley of Southern California's Colorado Desert region. It lies 23 miles (37 km) east of Palm Springs, 75 miles (121 km) east of Riverside, 127 miles (204 km) east of Los Angeles, 148 miles (238 km) northeast of San Diego, 250 miles (400 km) west of Phoenix, and 102 miles (164 km) north of Mexicali, Mexico.

Riverside County is a county located in the southern portion of the U.S. state of California. As of the 2020 census, the population was 2,418,185, making it the fourth-most populous county in California and the 10th-most populous in the United States. The name was derived from the city of Riverside, which is the county seat.