We talk a lot about migrants and migration, but in doing so, we often fall prey to fears and clichés. We must begin first with the often little-known facts of the numbers to understand a phenomenon that affects everyone and has been a hallmark of human history since the dawn of time. Roberto Volpi, an expert in statistics, helps us understand one of the great phenomena of our time by drawing on the power of available data. He does so in his latest, original essay, "Promised Land" (Solferino, 2025, pp. 240, also available as an e-book).
We first asked Roberto Volpi how many migrants there are in the world today:
First, a definition: according to the Population Division—the UN division responsible for collecting, making accessible, and developing population data and trends for all countries and regions of the world—an 'international migrant' is someone who emigrates from a country of origin to a destination country to reside there for at least 12 months. Well, there were 304 million international migrants in the world at the end of 2024, and since the estimate was made just a few months ago, it can be said that migrants are precisely that number today: 304 million, equal to 3.7 percent of the current 8.1 billion inhabitants of our planet. The first thing to note is that this figure is double that of 1990, when there were 154 million migrants and represented 2.9 percent of the population of our planet at that time.
Why is analyzing data and numbers important to understanding today's world?
Today's migrations trace a geography of paths, routes, and landings on the surface of the earth, providing a powerful interpretative key to today's troubled world. This is why we cannot understand our world without at least an idea, a framework, even if only a rough one, of migration. Generally speaking, international migrants head where they hope to find a better life and a better future. In this sense, they represent a sort of positive recognition of the countries they are headed for, and also a negative recognition of the countries they come from. Migrant numbers, in short, function somewhat like a litmus test—in the sense that they give us a pulse on the health or illness of various regions of the world.












