Ranked: Countries With the Most Serial Killers

Ranked: Countries With the Most Serial Killers

The United States stands out dramatically in the 2026 Radford/FGCU Report on Serial Killer Statistics, which compiles identified serial killers by country.

These figures reflect documented cases rather than the true prevalence of serial murder. Differences in law enforcement, case classification, record accessibility, and reporting can significantly affect country totals.

The U.S. Dominates Documented Cases

The following table shows countries with at least 10 identified serial killers, excluding offenders whose crimes spanned multiple countries. Radford University defines a serial killer as an offender who commits the unlawful killing of two or more victims in separate events.

Rank	Country	Identified Serial Killers	% of Serial Killers
1	United States	3,803	62.91
2	England	188	3.11
3	Russia	172	2.85
4	Australia	153	2.53
5	Japan	145	2.40
6	India	135	2.23
7	South Africa	132	2.18
8	Canada	130	2.15
9	Germany	105	1.74
10	Italy	102	1.69
11	France	97	1.60
12	Mexico	73	1.21
13	China	69	1.14
14	Brazil	46	0.76
15	Poland	31	0.51
16	Spain	31	0.51
17	Hungary	30	0.50
18	Austria	25	0.41
19	Colombia	24	0.40
20	Netherlands	21	0.35
21	Belgium	19	0.31
22	Czech Republic	18	0.30
23	Argentina	18	0.30
24	Sweden	16	0.26
25	Türkiye	16	0.26
26	Thailand	15	0.25
27	Scotland	14	0.23
28	Nigeria	14	0.23
29	Pakistan	14	0.23
30	Greece	13	0.22
31	Kenya	13	0.22
32	Iran	13	0.22
33	Ukraine	12	0.20
34	South Korea	11	0.18

The gap between first and second place is enormous. The U.S. has 3,803 identified serial killers, more than 20 times England’s total of 188. Russia ranks third with 172, followed by Australia (153) and Japan (145).

This disparity does not necessarily mean Americans are inherently more likely to become serial killers. Radford University researcher Mike Aamodt has argued that U.S. cases are easier to identify and document because police, prison, and public records are relatively accessible.

As a result, these figures are best understood as a ranking of identified cases, not the true prevalence of serial murder. Countries with less accessible records may have cases that were never identified or documented. Similar measurement challenges affect comparisons of the world’s most dangerous countries, where results depend heavily on which crimes are measured and recorded.

Why Have Serial Killings Declined?

Serial killing in the U.S. peaked decades ago. Research cited by Northeastern University estimates that nearly 300 known serial killers were active during the 1970s, compared with fewer than 50 during the 2010s, a decline of more than 80%.

Several factors may explain the decline. DNA evidence, surveillance cameras, and improved information sharing between police departments have made it considerably harder for repeat offenders to remain unidentified across multiple crimes.

Changing social behavior may have played a role as well. Hitchhiking and other situations that left people isolated with strangers were more common during the peak decades. The decline also occurred alongside broader changes in violent crime, though homicide rates across regions show that lethal violence remains highly uneven around the world.

Other explanations remain debated. Author Caroline Fraser has explored environmental lead exposure as one potential contributor to the earlier surge in violent behavior, while criminologist James Alan Fox has emphasized factors including demographics, improved policing, and advances in forensics. No single theory fully explains the rise and subsequent decline.

Learn More on the Voronoi App

For another data-driven look at mortality, see The Top Causes of Death in the United States on the Voronoi app.

• Source: https://www.visualcapitalist.com/ranked-countries-with-the-most-serial-killers/