Didion's first volume of essays, Slouching Towards Bethlehem, was published in 1968, and her second, The White Album, was published in 1979. Her nonfiction works include Salvador (1983), Miami (1987), After Henry (1992), Political Fictions (2001), Where I Was From (2003), We Tell Ourselves Stories in Order to Live (2006), Blue Nights (2011), South and West (2017) and Let Me Tell You What I Mean (2021). Her memoir The Year of Magical Thinking won the National Book Award for Nonfiction in 2005.

In 2005, Didion was awarded the American Academy of Arts & Letters Gold Medal in Criticism and Belles Letters. In 2007, she was awarded the National Book Foundation's Medal for Distinguished Contribution to American Letters. A portion of National Book Foundation citation read: "An incisive observer of American politics and culture for more than forty-five years, Didion's distinctive blend of spare, elegant prose and fierce intelligence has earned her books a place in the canon of American literature as well as the admiration of generations of writers and journalists." In 2013, she was awarded a National Medal of Arts and Humanities by President Barack Obama, and the PEN Center USA's Lifetime Achievement Award.

Didion said of her writing: "I write entirely to find out what I'm thinking, what I'm looking at, what I see and what it means." She died in December 2021.

"[Didion's] most ambitious project in fiction, and her most successful ... [it] glows with a golden aura of well-wrought classical tragedy." --Los Angeles Times Book Review

"An articulate witness to the most stubborn and intractable truths of our time, a memorable voice." --Joyce Carol Oates, The New York Times Book Review

"A novelist with important things to say about the dislocations of our time.... Joan Didion is stellar." --Newsday