The film's director and male lead, John Krasinski, played the creature in a motion capture suit for a few scenes.
Actress Millicent Simmonds has been deaf since infancy due to a medication overdose. This was the second film she starred in, with Wonderstruck (2017) being her first.
Emily Blunt did the bathtub scene in one take. According to John Krasinski, as soon as he said "Cut", Blunt left the character and asked the crew, "What's everyone having for lunch?"
The filmmakers purchased twenty tons of corn and hired local farmers to grow it.
Actor-director John Krasinski has said that the single greatest compliment he received regarding the film, was in a tweet from the master of the horror story himself, Stephen King: "A QUIET PLACE is an extraordinary piece of work. Terrific acting, but the main thing is the SILENCE, and how it makes the camera's eye open wide in a way few movies manage" (6 April 2018).