Bloomington is a unincorporated census-designated place 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 lead by the BIC, or the Bloomington Incorporation Committee. Bloomington apartments for rent comparison page shows most up to date rent information on Bloomington apartments and houses. Rent information is obtained from multiple rental sources but we cannot guarantee their accuracy.