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About the Inland Empire

The Inland Empire is a metropolitan area and region of Southern California, situated directly east of Los Angeles. The term may be used to refer to the cities of western Riverside County and southwestern San Bernardino County, and sometimes includes the desert communities of Palm Springs and the rest of the Coachella Valley; a much broader definition includes all of Riverside and San Bernardino counties.

Most of the area's population is located in the southwest portion of San Bernardino County and the northwest section of Riverside County. The Riverside-San Bernardino-Ontario metropolitan area covers more than 27,000 square miles and has a population of approximately 4 million.

The term "Inland Empire" is documented to have been used by the Riverside Enterprise newspaper (now The Press-Enterprise) as early as April 1914. Developers in the area likely introduced the term to promote the region and to highlight the area's unique features. The "Inland" part of the name is derived from the region's location, generally about 60 miles inland from Los Angeles and the Pacific Ocean. Originally, this area was called the Orange Empire due to the acres of citrus groves that once extended from Pasadena to Redlands during the first half of the twentieth century.

(Map from and Inland Empire information from 

ACSO Members Located Within the Inland Empire

California Chamber Orchestra, Murrieta
Cal State San Bernardino Chamber Orchestra, San Bernardino
Claremont Symphony Orchestra, Claremont
Corona Symphony Orchestra, Corona
Redlands Symphony, Redlands
Riverside Philharmonic, Riverside
San Bernardino Symphony, San Bernardino
Southland Symphony Orchestra, Ontario
Temecula Valley Symphony, Temecula