SSI at its 25th year.

Beginning in January 1974, the three previously existing State adult assistance programs were amalgamated into the Supplemental Security Income (SSI) program, to be administered by the Social Security Administration. This change was made to provide a nationwide floor of income for needs-based assistance, and to make such payments more efficiently by working through SSA's existing network of field offices. This article traces the 25-year patterns of growth and changes in the number of persons applying for assistance, the number and proportion of those applicants who were awarded payments, and the overall number of persons who received SSI. Three major age groups are considered separately: those aged 65 or older, disabled adults aged 18-64, and children age 18 and younger. The last group was newly eligible under SSI for payments based on their own blindness or disability and not, as was the case previously, because they were a member of a needy family.