How sure can you be of a number?
Every number here gets a trust score from 0 to 100. It shows how good the sources are, how far they agree, how many separate ways the number was measured, and how recent it is. Each source is linked, and you can see exactly how much it counts.
World
- How many people are in prison in each country?
Prisoners per 100,000 people in each country, comparing the World Prison Brief, UNODC and the Council of Europe SPACE survey.
226 rows, each with its own score - How many police officers does each country have?
Police personnel per 100,000 people for every country with data, from UNODC and Eurostat, plus the Norwegian police's own staffing figure.
131 rows, each with its own score - How many women are killed by a partner or family member?
Women and girls killed by a partner or family member per 100,000 women, by country: UNODC data plus national counts for Norway, Spain and Mexico.
105 rows, each with its own score - What is the homicide rate in each country?
Intentional homicide rates for every country with data, comparing UNODC police records with WHO death registrations.
203 rows, each with its own score - Where do people feel safe walking alone at night?
Share of adults who feel safe walking alone at night in 144 countries and territories, from Gallup's poll, compared with the European Social Survey and Numbeo.
144 rows, each with its own score - Which cities have the highest murder rates?
Homicide rates for the 50 cities in the Consejo Ciudadano's 2025 ranking, set beside official death registers, police records and UNODC city data.
50 rows, each with its own score
Europe
- Does London have more murders than New York?
Homicide rates in London and murder rates in New York City from police and death records, 2010-2025, per 100,000 people.
2 numbers, each with its own score - Does Sweden have more rapes than the rest of Europe?
Rapes reported to police in Sweden, Brå's recount under German rules, and the EU survey of women's experience of sexual violence, compared with Europe.
3 numbers, each with its own score - How does registered crime differ by migration background in Sweden?
How often people born abroad, and people born in Sweden to foreign-born parents, are registered as crime suspects in Sweden, raw and adjusted.
4 numbers, each with its own score - How many people are shot dead in Sweden?
People shot dead in Sweden by police shooting statistics, Brå's review of lethal violence and the cause-of-death register, 2012-2025.
2 numbers, each with its own score - Is crime rising in England and Wales?
How crime measured by the Crime Survey for England and Wales and by police records changed over 10 years, and why the two differ.
2 numbers, each with its own score - Is knife crime rising in England and Wales?
How knife crime in England and Wales changed since the year ending March 2020 in police records, hospital data and the Homicide Index, and why they differ.
3 numbers, each with its own score - What share of crime suspects in Germany are not German citizens?
Non-German citizens as a share of police suspects (2025), with and without immigration offences, of people convicted (2024) and of the population.
4 numbers, each with its own score
United States
- Are immigrants in the US incarcerated or convicted more or less often than US-born people?
Incarceration of immigrant and US-born men from Census data, and Texas conviction rates by legal status from Cato and the Center for Immigration Studies.
5 numbers, each with its own score - How many Americans die from guns each year, and how?
US gun deaths from CDC death records, 2014-2024, split into suicides and homicides, beside FBI and Gun Violence Archive counts.
3 numbers, each with its own score - How many mass shootings happen in the United States each year?
US mass shootings per year under four definitions: Gun Violence Archive, Mother Jones, The Violence Project and FBI active shooter counts, 2014-2025.
4 numbers, each with its own score - How many people do US police kill each year?
People killed by US police, 2015-2025: Mapping Police Violence, Washington Post fatal shootings and CDC death certificates compared.
2 numbers, each with its own score - Is crime rising or falling in the United States?
US violent and property crime since 2015 in FBI police estimates and the BJS victim survey, and why the two sources can disagree.
2 numbers, each with its own score - What is the murder rate in the United States?
Murders per 100,000 people in the United States from FBI estimates, CDC death records and the Real-Time Crime Index, 2010-2025, and why they differ.
2 numbers, each with its own score
Norway
- How many people are killed in Norway each year?
Homicide victims in Norway, 2010-2025, from Kripos's police overview, FHI's cause of death register and SSB, and why the counts differ.
2 numbers, each with its own score - Is crime rising in Norway?
How offences reported to Norway's police, reported violence and survey victimisation changed over 10 years, and why the measures differ.
3 numbers, each with its own score - Is youth crime rising in Norway?
How the rate of 15-17-year-olds charged by police and the share of upper secondary boys who report shoplifting changed over about ten years in Norway.
2 numbers, each with its own score
Latin America and Africa
- How many people are killed in Brazil each year?
Homicides in Brazil, 2015-2024: Ministry of Health death records (SIM) beside FBSP police data, plus Ipea's estimate including hidden homicides.
2 numbers, each with its own score - How many people are killed in Mexico each year?
Homicide victims in Mexico from INEGI death records and SESNSP prosecutors' files, 2015-2025, and how closely the two official counts agree.
2 numbers, each with its own score - What is South Africa's murder rate?
South Africa's murder rate from SAPS police records, Stats SA death records, UNODC and WHO, plus a household survey, and why they differ.
3 numbers, each with its own score