What do you call the city with the highest Maltese population in the world? Detroit. While the Michigan metropolis lies far away from the tiny Mediterranean island, it’s home to 44,000 Maltese expats, while the island’s largest city holds fewer than 23,000. Malta’s not alone: Politicians in France, Turkey, Mexico and other nations that allow expats to vote back home have taken to campaigning overseas. While the U.S. and the U.K. worry about too much immigration, for many small countries it’s emigration that threatens to drain the young, educated, working population.