5 ft 10 in (177.8 cm)
John Wayne Gacy is commonly listed at 5 ft 10 in (177.8 cm).
Where it comes from: repeated across many profiles, with no date or method published.
How tall was John Wayne Gacy?
John Wayne Gacy is commonly listed at 5 ft 10 in (177.8 cm).
Other reports range from 5 ft 8.5 in (174 cm) to 5 ft 10 in (177.8 cm); the drawing and the comparisons on this page use 5 ft 10 in (177.8 cm). Each one is listed below with where it comes from.
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About John Wayne Gacy’s height
Where this height comes from
John Wayne Gacy was an American serial killer. Crime + Investigation and two Wikidata entries that cite no source give different heights.
5 ft 8.5 in (174 cm)
John Wayne Gacy is commonly listed at 5 ft 8.5 in (174 cm).
Where it comes from: repeated across many profiles, with no date or method published.
5 ft 9 in (175.3 cm)
John Wayne Gacy is commonly listed at 5 ft 9 in (175.3 cm).
Where it comes from: repeated across many profiles, with no date or method published.
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Cite this page
| APA | Heightvs. (2026, November 3). How tall was John Wayne Gacy? 5 ft 10 in (178 cm). https://heightvs.com/how-tall/john-wayne-gacy |
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| MLA | “How Tall Was John Wayne Gacy? 5 ft 10 in (178 cm).” Heightvs, 3 Nov. 2026, heightvs.com/how-tall/john-wayne-gacy. |
| Chicago | “How Tall Was John Wayne Gacy? 5 ft 10 in (178 cm).” Heightvs. Last modified November 3, 2026. https://heightvs.com/how-tall/john-wayne-gacy. |
| Link | <a href="https://heightvs.com/how-tall/john-wayne-gacy">How tall was John Wayne Gacy? 5 ft 10 in (178 cm) (Heightvs)</a> |