The story
In December 1966, 12 heads of state made a declaration urging the United Nations to work on population issues. The Secretary-General created a trust fund for population in 1967. The agency began operations in 1969 as the United Nations Fund for Population Activities under the administration of the United Nations Development Fund. In 1971 it was placed under the authority of the United Nations General Assembly. Its name was changed into United Nations Population Fund in 1987. However, the shortened term of UNFPA has been retained.
From Wikipedia’s article on United Nations Population Fund, shared under CC BY-SA 4.0.5