The original question was phrased by the source as "To what extent do you believe the following conspiracy theories? Please select one option on each row. - 9/11 was an inside job"
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Belief that September 11 was an inside job in the United States in 2019
This statistic shows the results of a 2019 survey on conspiracy theories in the United States. During the survey, the respondents were asked whether they believe in the conspiracy theory that the attacks on the World Trade Center on September 11, 2001 were an inside job, or not. ** percent of respondents stated they strongly or somewhat believe in this theory, while ** percent said they strongly or somewhat disbelieve.
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YouGov. (January 22, 2019). To what extent do you believe in the conspiracy theory that 9/11 was an inside job? [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 21, 2026, from /statistics/959504/belief-september-11-inside-job-conspiracy-us/
YouGov. "To what extent do you believe in the conspiracy theory that 9/11 was an inside job?." Chart. January 22, 2019. ÌÇÐÄÆƽâ°æ. Accessed July 21, 2026. /statistics/959504/belief-september-11-inside-job-conspiracy-us/
YouGov. (2019). To what extent do you believe in the conspiracy theory that 9/11 was an inside job?. ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 21, 2026. /statistics/959504/belief-september-11-inside-job-conspiracy-us/
YouGov. "To What Extent Do You Believe in The Conspiracy Theory That 9/11 Was An inside Job?." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 22 Jan 2019, /statistics/959504/belief-september-11-inside-job-conspiracy-us/
YouGov, To what extent do you believe in the conspiracy theory that 9/11 was an inside job? ÌÇÐÄÆƽâ°æ, /statistics/959504/belief-september-11-inside-job-conspiracy-us/ (last visited July 21, 2026)
To what extent do you believe in the conspiracy theory that 9/11 was an inside job? [Graph], YouGov, January 22, 2019. [Online]. Available: /statistics/959504/belief-september-11-inside-job-conspiracy-us/
