In Stranger Things, the exact total number of Demogorgons in the entire universe is never clearly stated on-screen, but only a few individual Demogorgons are directly featured or identified so far.

Main named Demogorgons

• The “Hawkins Demogorgon” is the original monster from season 1 that kidnaps Will Byers and stalks Hawkins.

• A second major Demogorgon appears later as the “Russian Demogorgon,” the full-grown creature kept and fought in the Kamchatka prison storyline.

• The creature D’Artagnan (“Dart”) from season 2 is part of the same species’ life cycle, evolving from slug-like larva to a demodog and toward a full Demogorgon.

How many exist versus how many are shown

• Lore sources and analysis describe Demogorgons as a species native to the Upside Down, implying there are many of them in-universe, especially by the time later seasons open more gates.

• On-screen, however, only a handful are clearly shown: one main Demogorgon in Hawkins, one main Demogorgon in Russia, plus several “demodogs” and other life‑stage variants, rather than a large, counted army of full-grown Demogorgons.