★ 8.2 1 
Best Documentary series on Plex (United States)
The most popular Documentary series you can stream on Plex in United States right now, ranked by viewers.
★ 8.2 1 
★ 7.8 2 MythBusters
★ 5.7 3 This Old House
★ 6.2 4 Finding Your Roots
★ 7.7 5 How It's Made
★ 7.9 6 Forensic Files
★ 8.3 7 How the Universe Works
★ 7.2 8 Grand Designs
★ 7.5 9 A Haunting
★ 6.3 10 Hoarders
★ 7.2 11 Fatal Attraction
★ 7.7 12 Anthony Bourdain: Parts Unknown
★ 8.8 13 Mysteries at the Museum
★ 7.2 14 Autopsy: The Last Hours of...
★ 8.1 15 Fear Thy Neighbor
★ 7.3 16 Ride with Norman Reedus
★ 7.8 17 On Patrol: Live
★ 8.2 18 Buzzfeed Unsolved: True Crime
★ 6 19 Most Haunted
★ 8.2 20 Paranormal Caught on Camera
Updated: October 25, 2026 ·