Zodiac Killer

1940 - Today

Zodiac Killer

The Zodiac Killer or simply Zodiac is the pseudonym of an unidentified American serial killer who operated in Northern California from at least the late 1960s to the early 1970s. The killer originated the name in a series of taunting letters and cards sent to the San Francisco Bay Area press. The letters included four cryptograms (or ciphers). Read more on Wikipedia

Since 2007, the English Wikipedia page of Zodiac Killer has received more than 20,842,419 page views. His biography is available in 48 different languages on Wikipedia making him the 21st most popular extremist.

Memorability Metrics

  • 21M

    Page Views (PV)

  • 65.39

    Historical Popularity Index (HPI)

  • 48

    Languages Editions (L)

  • 4.97

    Effective Languages (L*)

  • 4.32

    Coefficient of Variation (CV)

Page views of Zodiac Killers by language


Among extremists, Zodiac Killer ranks 21 out of 182Before him are Man in the Iron Mask, Abdullah Öcalan, Abu Bakr al-Baghdadi, Albert Fish, Ted Kaczynski, and Carlos the Jackal. After him are Cleon, Jim Jones, John Wayne Gacy, Amon Göth, Charles Ponzi, and Peter Kürten.

Most Popular Extremists in Wikipedia

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Among people born in 1940, Zodiac Killer ranks 33Before him are Giorgio Moroder, Abbas Kiarostami, Joseph Brodsky, Terry Gilliam, Joachim Gauck, and Tabaré Vázquez. After him are James Caan, George A. Romero, Stuart Sutcliffe, Patrick Stewart, Dario Argento, and Kip Thorne.

Others Born in 1940

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In United States

Among people born in United States, Zodiac Killer ranks 486 out of 12,171Before him are Sidney Poitier (1927), Margaret Brown (1867), Willem Dafoe (1955), Gertrude B. Elion (1918), Chester W. Nimitz (1885), and Lewis H. Morgan (1818). After him are Toni Morrison (1931), Edgar Cayce (1877), James Caan (1940), Kim Basinger (1953), Barbara McClintock (1902), and Alan Shepard (1923).

Among EXTREMISTS In United States

Among extremists born in United States, Zodiac Killer ranks 8Before him are Charles Manson (1934), Ted Bundy (1946), Lee Harvey Oswald (1939), Ed Gein (1906), Albert Fish (1870), and Ted Kaczynski (1942). After him are Jim Jones (1931), John Wayne Gacy (1942), George Stinney (1929), H. H. Holmes (1861), William Kemmler (1860), and Barry Seal (1939).