671,000 children were served by the foster care system in the United States in 2015. "After declining more than 20 percent between FY 2006 and FY 2012 to a low of 397,000, the number of children in foster care on the last day of the fiscal year increased to 428,000 in FY 2015, with a slightly higher percent change from 2014 to 2015 (3.3%) than observed from 2013 to 2014 (3.2%)." Since FY 2012, the number of children in foster care at the end of each FY has steadily increased.The median amount of time a child spent in foster care in the U.S. in 2015 was 13.5 months. That year, 74% of children spent less than two years in foster care, while 13% were in care for three or more years. Of the estimated 427,910 children in foster care on September 30, 2015: 43 percent were White, 24 percent were African-American, 21 percent were Hispanic (of any race), 10 percent were other races or multiracial, and 2 percent were unknown or unable to be determined.Children may enter foster care voluntarily or involuntarily. Voluntary placement may occur when a biological parent or lawful guardian is unable to care for a child. Involuntary placement occurs when a child is removed from their biological parent or lawful guardian due to the risk or actual occurrence of physical or psychological harm, or if the child has been orphaned. In the US, most children enter foster care due to neglect.
Foster care is correlated with a range of negative outcomes compared to the general population. Children in foster care have a high rate of ill health, particularly psychiatric conditions such as anxiety, depression, and eating disorders. One third of foster children in a US study reported abuse from a foster parent or other adult in the foster home. Nearly half of foster children in the US become homeless when they reach the age of 18, and the poverty rate is three times higher among foster care alumni than in the general population. By country
Australia
In Australia foster care was known as "boarding-out". Foster care had its early stages in South Australia in 1867 and stretched to the second half of the 19th century. It is said that the system was mostly run by women until the early 20th century. Then the control was centered in many state childrens departments. "Although boarding-out was also implemented by non-government[al] child rescue organizations, many large institutions remained. These institutions assumed an increasing importance from the late 1920s when the system went into decline." The system was re-energized in the postwar era, and in the 1970s. The system is still the main structure for "out-of-home care." The system took care of both local and foreign children. "The first adoption legislation was passed in Western Australia in 1896, but the remaining states did not act until the 1920s, introducing the beginnings of the closed adoption that reached it peak in the period 1940–1975.