Zodiac Killer

1940 - Today

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The Zodiac Killer, or simply Zodiac or the Zodiac, is the pseudonym of an unidentified serial killer who operated in Northern California in the late 1960s. The killer originated the name himself in a series of taunting letters and cards that he mailed to regional newspapers, threatening killing sprees and bombings if they were not printed. Read more on Wikipedia

Since 2007, the English Wikipedia page of Zodiac Killer has received more than 25,376,232 page views. His biography is available in 49 different languages on Wikipedia (up from 48 in 2019). Zodiac Killer is the 17th most popular extremist (up from 21st in 2019), the 363rd most popular biography from United States (up from 486th in 2019) and the 7th most popular American Extremist.

The Zodiac Killer is most famous for the murders that occurred in the late 1960s and early 1970s in California. He is believed to have killed at least five people, but the number of victims could be as high as 37.

Memorability Metrics

  • 25M

    Page Views (PV)

  • 75.80

    Historical Popularity Index (HPI)

  • 49

    Languages Editions (L)

  • 6.12

    Effective Languages (L*)

  • 4.09

    Coefficient of Variation (CV)

Page views of Zodiac Killers by language


Among extremists, Zodiac Killer ranks 17 out of 205Before him are Man in the Iron Mask, Andrei Chikatilo, Ed Gein, Ramón Mercader, Ulrike Meinhof, and Ted Kaczynski. After him are Albert Fish, Abdullah Öcalan, Abu Bakr al-Baghdadi, Charles Ponzi, Cleon, and Machine Gun Kelly.

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Among people born in 1940, Zodiac Killer ranks 26Before him are Michel Temer, J. M. Coetzee, Brian De Palma, Joachim Gauck, Martin Sheen, and John Hurt. After him are Patrick Stewart, Peter Fonda, James Caan, Terry Gilliam, Joseph Brodsky, and Abbas Kiarostami.

Others Born in 1940

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In United States

Among people born in United States, Zodiac Killer ranks 363 out of 15,968Before him are Isaac Singer (1811), P. T. Barnum (1810), John Quincy Adams (1767), Robert Johnson (1911), Claude Shannon (1916), and Jim Mattis (1950). After him are Herbert A. Simon (1916), Jimmy Hoffa (1913), Philip Roth (1933), Robert E. Lee (1807), Margaret Mead (1901), and Montgomery Clift (1920).

Among EXTREMISTS In United States

Among extremists born in United States, Zodiac Killer ranks 7Before him are Charles Manson (1934), John Wilkes Booth (1838), Ted Bundy (1946), Lee Harvey Oswald (1939), Ed Gein (1906), and Ted Kaczynski (1942). After him are Albert Fish (1870), Machine Gun Kelly (1895), Jim Jones (1931), John Wayne Gacy (1942), H. H. Holmes (1861), and Barry Seal (1939).