Methodology
To identify the countries with the most serial killers, 24/7 Tempo reviewed the Annual Report on Serial Killer Statistics: 2020 from Radford University and Florida Gulf Coast University. All the the countries on this list have been home to at least 10 known serial killers and are ranked according to their total number. (In the case of a tie, the country with the smaller total population, and thus the higher per capita rate, ranks higher.)
For the purposes of this story, a serial killer is defined as someone who has been discovered by law enforcement to have killed two or more people in separate incidents. Serial killers who have had victims in multiple countries were not counted.
Each country’s share of the world population is from the report, which used population figures from 2016. Listed population totals are from the World Bank and national census data and are for 2021. Each country’s share of the world’s population has been rounded off.
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