Which has higher terrorist attacks by severity, Sri Lanka or United States?

Sri Lanka, at 0 attacks against 0 attacks in United States as of 2020.

What is the difference in terrorist attacks by severity between Sri Lanka and United States?

0 attacks, with Sri Lanka ahead.

How many years of comparable data are there for Sri Lanka and United States?

51 years are reported by both, from 1970 to 2021.

Where does this data come from?

National Consortium for the Study of Terrorism and Responses to Terrorism (START) (2022) – with major processing by Our World in Data, published as Terrorist attacks by severity. Statizoid refreshes it automatically from the source and publishes the full history for both places.

Sri Lanka vs United States: Terrorist attacks by severity

Sri Lanka

0 attacks

in 2020

United States

0 attacks

in 2020

Sri Lanka rank

6th

United States rank

6th

Terrorist attacks by severity over time

Sri Lanka
United States

How they compare

Sri Lanka currently reports 0 attacks against 0 attacks in United States, a difference of 0 attacks.

The two have swapped places 10 times across 51 shared years of data; in 1970 it was United States ahead.

Sri Lanka ranks 6th and United States ranks 6th of 188 countries.

Across the 6 decades both report, Sri Lanka averaged higher in 2 and United States in 1.

Head to head by decade

Decade	Sri Lanka	United States	Difference	Ahead
1970s	0 attacks	0 attacks	0 attacks	—
1980s	0.3 attacks	0 attacks	0.3 attacks	Sri Lanka
1990s	0.5556 attacks	0.1111 attacks	0.4444 attacks	Sri Lanka
2000s	0.1 attacks	0.3 attacks	0.2 attacks	United States
2010s	0 attacks	0 attacks	0 attacks	—
2020s	0 attacks	0 attacks	0 attacks	—

Averages of every year both report within each decade.

Frequently asked questions

Which has higher terrorist attacks by severity, Sri Lanka or United States?: Sri Lanka, at 0 attacks against 0 attacks in United States as of 2020.
What is the difference in terrorist attacks by severity between Sri Lanka and United States?: 0 attacks, with Sri Lanka ahead.
How many years of comparable data are there for Sri Lanka and United States?: 51 years are reported by both, from 1970 to 2021.
How do Sri Lanka and United States rank globally for terrorist attacks by severity?: Sri Lanka ranks 6th and United States ranks 6th of 188 countries.
Where does this data come from?: National Consortium for the Study of Terrorism and Responses to Terrorism (START) (2022) – with major processing by Our World in Data, published as Terrorist attacks by severity. Statizoid refreshes it automatically from the source and publishes the full history for both places.

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Sri Lanka vs United States: Terrorist attacks by severity. Statizoid, drawing on National Consortium for the Study of Terrorism and Responses to Terrorism (START) (2022) – with major processing by Our World in Data. Retrieved 08 November 2026, from https://social-development.statizoid.com/compare/terrorism-attacks-by-severity/sri-lanka/united-states/

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About this data

Indicator: Terrorist attacks by severity
Unit: attacks
Source: National Consortium for the Study of Terrorism and Responses to Terrorism (START) (2022) – with major processing by Our World in Data
Licence: CC BY 4.0 (Our World in Data)
Coverage: 188 places, 7,009 data points, 1978–2020
Last refreshed: 30 October 2026

Number of terrorist attacks with more than 100 deaths.