In Orange County, Little Saigon is now a wide, spread-out community dotted with a myriad of suburban-style strip malls containing a mixture of Vietnamese and Chinese Vietnamese businesses. It is located southwest of Disneyland between the State Route 22 and Interstate 405. However, the main focus of Little Saigon is the Bolsa Avenue center (where Asian Garden Mall and Little Saigon Plaza are considered the heart), which runs through Westminster and the street has been officially designated Little Saigon by the city council of Westminster in the late 1980s. The borders of Little Saigon can be considered to be Trask and McFadden on the north and south and Euclid and Magnolia on the east and west, respectively. About three-quarters of the population in this area are Vietnamese.

It is lined with numerous huge shopping centers and strip malls. As with many other Vietnamese American communities, competing mom-and-pop restaurants that serve Vietnamese cuisine especially Ph? are abundant. There are approximately 200 restaurants in the area of Little Saigon and spilling over to Garden Grove, Fountain Valley, Santa Ana and Huntington Beach. In addition, there are quite a number of Vietnamese supermarkets, small Vietnamese delis and bakeries in Little Saigon specializing in French-style coffee and baguette sandwiches - indeed, a legacy of Vietnam's turbulent colonial past. Restaurants serving Chinese cuisine such as Teochew and Cantonese are also available but in smaller numbers. Adding to growth of Vietnamese markets in the area, the rapidly expanding Vietnamese supermarket superstore chain Shun Fat Supermarket (called in Vietnamese, Siêu th? Thu?n Phát) opened its doors in Westminster in 2005. Catering to the large Vietnamese population in the area are also professional offices of doctors, dentists, lawyers, accountants, etc. who speak Vietnamese. Food and authentic Vietnamese cuisine remains the forefront of attractions amongst non-Vietnamese visiting Little Saigon. The community's history of food and cuisine is captured in a recent cookbook by Ann Le, "The Little Saigon Cookbook: Vietnamese Cuisine and Culture in Southern California's Little Saigon."

Various professional offices in another area of Little Saigon in WestminsterIn 1984, the major Chinese American supermarket chain 99 Ranch Market (initially called 99 Price Market) had its first start in Little Saigon of California. However, unable to compete with many of the Vietnamese markets in the area, the flagship store has since closed and been replaced by another supermarket.

The two-story enclosed Asian Garden Mall was developed by the well-known and influential Little Saigon founder and developer Frank Jao (an ethnic Chinese born in Haiphong, Vietnam) and bankrolled by Chinese Indonesian and Taiwanese investors. Asian Garden Mall was opened in 1987. Owing to its fame, it tends to have the highest costs of rent in Little Saigon. Jao also developed another heavily-frequented Vietnamese shopping center across the street, and this center once contained a long court of Confucius statues as motifs, but frequently vacant storefronts in the rear of the plaza were cleared to make way for housing developments. Today, a few of the original statues remain.