There is still relatively little way to know just how many people watch any given show on Netflix.
But while those numbers aren't as transparent as we might like them to be, when a show oozes into popular culture the way Stranger Things does, we can guess it's right up there with viewership.
So it's no surprise that Netflix announced Stranger Things Season 4 is coming our way.
In addition to the fourth-season pickup, brother Matt and Ross Duffer inked a multi-year film and television deal that could be worth nine figures.
That certainly shows some faith in the Duffer Brothers and Stranger Things!
If you're wondering how the figures work, Netflix releases what they want you to know.
In July, they announced that over 40 million household accounts had watched at least a portion of Stranger Things Season 3 since it's release.
They also shared that 18.2 million households had finished Season 3 in its entirety.
Neilsen had previously shared that more than 15 million people watched the Stranger Things Season 2 premiere within three days of airing with 11 million of those in the key demo.
Similarly, Parrot Analytics named Stranger Things Season 2 the most popular show in the country.
“The Duffer Brothers have captivated viewers around the world with Stranger Things and we’re thrilled to expand our relationship with them to bring their vivid imaginations to other film and series projects our members will love,” said Netflix chief content officer Ted Sarandos.
“We can’t wait to see what the Duffer Brothers have in store when they step outside the world of the Upside Down.”
"We are absolutely thrilled to continue our relationship with Netflix. Back in early 2015, Ted Sarandos, Cindy Holland, Brian Wright, and Matt Thunell took a huge chance on us and our show — and forever changed our lives," the Duffers said in a joint statement Monday.
"From that first pitch meeting to the release of Stranger Things 3, the entire Netflix team has been nothing short of sensational, providing us with the kind of support, guidance and creative freedom we always dreamed about.
"We can’t wait to tell many more stories together — beginning, of course, with a return trip to the Upside Down!"
Numbers are one thing, and awards are another.
Stranger Things has netted 18 Emmy nominations and won five awards.
Of course, we have no idea if Stranger Things Season 4 will be the last of the series, and Netflix's three to four seasons and done structure is always a concern.
But with a show that is as embedded in modern culture as Stranger Things, it wouldn't be the strangest thing at all for it to continue past the fourth season.
Carissa Pavlica is the managing editor and a staff writer and critic for TV Fanatic. She's a member of the Critic's Choice Association, enjoys mentoring writers, cats, and passionately discussing the nuances of television and film. Follow her on Twitter and email her here at TV Fanatic.