Kumin, who wrote more than three dozen books of poetry, fiction, nonfiction and children's literature, died Thursday at her home in Warner after a year of failing health, said the Bennett Funeral Home in Concord.
Kumin was an advocate for women writers, social justice and animal rights. Her final work, "And Short the Season," is scheduled to be released later this year.
Born in Philadelphia, she graduated from Radcliffe College and lived for a while in Newton, Mass.
Kumin's family said her work was marked by a love and deep observation of nature and an unwavering commitment to the craft of writing. They said a celebration of her life and work will be held in the spring.
Kumin's work has been recognized with numerous other awards, including the Ruth Lilly Prize, the Harvard Medal, the Levinson Prize, and the Los Angeles Times Poetry Award.
Kumin also was a prominent teacher of writing, occupying graduate or undergraduate visiting chairs or fellowships at Boston University, Brandeis, Columbia, MIT, Princeton and other institutions. At New England College in Henniker, N.H., she helped establish a new poetry master of fine arts program.
Kumin's work and life were linked to those of poet Anne Sexton, a close friend and collaborator who committed suicide in 1974.
In a 2010 interview with the Greater Brockton (Mass.