Indio is a city in Riverside County, California, United States, located 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, and 250 miles (402 km) west of Phoenix. The word Indio is Spanish for Indian.
The population was 76,036 in the 2010 United States Census, up from 49,116 at the 2000 census, an increase of 55%. Indio was formerly referred to as the Hub of the Valley, a Chamber of Commerce slogan used in the 1970s. It later was nicknamed the City of Festivals, a reference to the numerous cultural events held in the city, most notably the Coachella Valley Music and Arts Festival.
Railroad line construction east out of Los Angeles began in 1873. Trains were operated to Colton on July 16, 1875, and to Indio (then Indian Wells) on May 29, 1876. Moving on eastward from Indio, the railroad reached the west bank of the Colorado River opposite Yuma on May 23, 1877 (a village known as Arizona City prior to 1873). There was delay in getting military authority to lay tracks across the Yuma Indian reservation, and it was September that year before the bridge was completed so trains could operate into Yuma. The Southern Pacific Railroad was to have joined those of the Texas & Pacific, one of several railroads then holding, or seeking, federal authority to build lines from various sections of the country west to the Pacific Coast.