Orange County is located in the Los Angeles metropolitan area in California. It's the third-most populous county in California, the sixth most populous in the U.S., and more populous than 21 U.S. states. Wikipedia

The San Gabriel Valley is one of the principal valleys of Southern California, lying generally to the east of the city of Los Angeles. Pasadena is the largest city in the San Gabriel Valley. Wikipedia

The Inland Empire (IE) is a metropolitan area and region in Southern California, inland of and adjacent to Los Angeles. It includes the cities of western Riverside County and southwestern San Bernardino County, and is sometimes considered to include the desert communities of the Coachella and Victor Valleys. Wikipedia

North County is a region in the northern area of San Diego County, California. It is the second-most populous region in the county (after San Diego). Beach culture is prominent in the area, and many of the region's beaches and lagoons are protected areas to help ensure the environment remains pristine. Wikipedia