Formerly known as Indiana State Federation of Poetry Clubs, it was first established on May 31, 1941, and included 25 charter members; it was incorporated as a non-profit in 1980 as the Indiana State Federation of Poetry Clubs.
In 2016 the organization changed its name to Poetry Society of Indiana and extended its outreach throughout the state.
In 1978 the organization inaugurated its PSI Annual Poetry Contest, which now has over 25 poem categories and over $1800 in prizes monies (total).
The annual PSI Spring Fling Convention includes announcing the winners of the annual PSI Members-Only Spring Fling Poetry Contest.
PSI published its first newsletter bulletin Indiana Poet on August 1, 1942.