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is a unincorporated census-designated place (CDP) in San Bernardino County, California, United States. The population was 19,318 at the 2000 census.
Though unincorporated at the current time, many of the town's political activists are pushing for Bloomington to attain cityhood, while the nearby cities of Rialto and Fontana are attempting to annex the community. The incorporation effort is led by the BIC, or the Bloomington Incorporation Committee.
Bloomington was originally developed as part of the land holdings of the Semi-Tropic Land and Water
Company which was formed in 1887. In 1907, the Riverside Portland Cement Company built a large plant
near Crestmore(South Bloomington) and to provide transportation for employees built a standard gauge railroad to Riverside. On
May 20th, 1911 the line was opened to Bloomington. The original community, known as Crestmore, is
generally located between Locust Avenue and Larch Avenue, south of Jurupa Avenue, extending to the
County line. The Pacific-Electric Crestmore Line (Riverside-Rialto) provided local service for many years.
The Semi-Tropic Land and Water Company laid out the town sites of Bloomington, Rialto, Fontana, and
Sansevaine. The town site for Bloomington, after being surveyed in April, 1888, was bounded on the north by
Valley Boulevard, on the south by Slover Avenue, on the east by Larch Avenue, and on the west by Linden
Avenue. Presently, part of the community is still rural and many residents continue to keep and raise animals.