Riverside was first founded during the 19th century and is best known for its role within the California citrus industry. The Serranos and the Cahuillas inhabited for the first time the site of what is now Riverside. The first official record of the area was recorded in the 1770s after the exploration of Juan Bautista De Anza. However, it was officially founded much later, in 1869, although some sources claim that it was not founded until the 1870s.
It was in 1873 when seedless oranges were planted from Brazil, and Riverside's mild climate and other conditions were found to be favorable for orange cultivation, leading to a thriving citrus industry. Less than ten years later, nearly half of the state's 500,000 citrus trees were located in Riverside. Unlike other geographical entities detailed on this site, neighborhoods are not recognized by the U.S. UU.
To overcome this, we have calculated reasonable estimates of the same statistics that are presented for other types of entities. Each statistic is calculated as the weighted sum or average of census tracts or groups of blocks that overlap the neighborhood. A weighted sum is used for counts of individuals or households, and a weighted average is used for statistics that are in themselves some form of average, such as median household income. Census block groups are preferred when the statistics in question are available at the block group level.
The weight of a given district (or group of blocks) is calculated as the population of the census tabulation blocks that occupy the intersection between the district and the neighborhood as a fraction of the total population of the neighborhood. The black population in Riverside, California is 17,525, 5.3 percent are black. African American refers to the black population in Riverside, They are black racial groups of Africa, it includes sub-Saharan Africans, Kenyans, Nigerians, Caribbean such as Haitians and Jamaicans. The median age of Riverside population is 31.1, Riverside population by age is, under 18 is 80,508, 16 years or older is 260,605, 18 years or older is 250,861, 21 years or older is 225,158, 65 years or older is 42,908.