It is also part of the San Gabriel Valley Newspaper Group, along with the Pasadena Star-News and the Whittier Daily News.

[4] The San Gabriel Valley Tribune was launched on March 21, 1955, in West Covina, California.

After 60 years at the West Covina location, the newspaper moved its operations to Monrovia, with daily local news coverage which includes city government, public education, public safety, transportation issues, entertainment, lifestyle, and editorials.

It publishes the annual So Cal Prep Legends high school football magazine with coverage from the San Fernando Valley, the San Gabriel/Pomona Valleys, the Whittier area, the South Bay, Long Beach/Gateway Cities, Orange County, western and central Riverside County and San Bernardino Valley, published in late August.

The annual San Gabriel Valley's Best magazine, which publishes in late May, honors the best people, places to shop, eateries, and services in the region.