According to Nielsen, The Walking Dead was the number one entertainment series of the year among adult audiences of between 18 and 49 years old. It averaged 19.7 million viewers per episode.
The series was also the most time-shifted television programme of 2015, when comparing its viewership from the original telecast and from a repeat a week later. Nielsen estimates that The Walking Dead attracted 10.89 million viewers in a week’s worth of VoD and DVR playback.
It was also named by Nielsen as the number one television series in Twitter exposure for a second straight year. On average, around four million people saw one or more of the 424,000 tweets sent about each new episode. These tweets were sent by an average of 153,000 unique authors and seen about 28 million times.