In its original American broadcast, "The Fix" was seen by an estimated 11.62 million household viewers and gained a 2.7/6 ratings share among adults aged 18–49, according to Nielsen Media Research. This was a 7% decrease in viewership from the previous episode, which was watched by 12.42 million viewers with a 2.7/7 in the 18-49 demographics. With these ratings, "Person of Interest" was the third most watched show on CBS for the night behind "Rules of Engagement" and "The Big Bang Theory", third on its timeslot and fifth for the night in the 18-49 demographics, behind "The Office", "Rules of Engagement", "Grey's Anatomy", "The Big Bang Theory", and "World Series Game 6".