Is the world’s population being miscounted?
More or Less: behind the statistics
Saturday, 7 June 2025 - 9 minutes
Exactly how many people live on our planet is one of those difficult-to-answer questions. The UN estimates is 8.2 billion, but that’s largely based on census data, which is certainly not a perfect measure. So when a recent study from Finland found that rural populations around the world had been underestimated by 50 to over 80%, the media got quite excited. This would be a big error - a 50% underestimate would mean the actual number of people in an area is double the number they thought there were. One newspaper in Spain - El Mundo - did its own sums and said this meant there were potentially 2 billion more people in the world than we currently think there are. But is it what the researchers in Finland actually meant? “Absolutely not,” says Josias Lang-Ritter, a researcher from University in Finland and a co-author of the study.Tim Harford speaks to Josias to figure out the right way of understanding the study.Presenter: Tim Harford
Producer: Caroline Bayley
Series producer: Tom Colls
Production co-ordinator: Brenda Brown
Sound mix: Nigel Appleton
Editor: Richard Vadon
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