The U.S. National Book Award was reestablished in 1950 with awards by the book industry to authors of 1949 books in three categories. Williams won the first National Book Award for Poetry, recognizing both the third volume of Paterson and Selected Poems.
In May 1963, he was posthumously awarded the Pulitzer Prize for Pictures from Brueghel and Other Poems (1962) and the Gold Medal for Poetry of the National Institute of Arts and Letters. The Poetry Society of America continues to honor William Carlos Williams by presenting the prestigious William Carlos Williams Award annually for the best book of poetry published by a small, non-profit or university press.
Williams's house in Rutherford is now on the National Register of Historic Places. He was inducted into the New Jersey Hall of Fame in 2009.