That depends on if the Infinity Gauntlet considered them a single group to remove half of, or part of a larger group. It removed half of all humans, and that means half of all Europeans, half of all New Yorkers, most likely half of all Spokanites, but at some point you get to towns so small that some of them will have lost all inhabitants, and some will have lost all, if the glove just picked half of humanity at random. And if it didn’t, it still has to pick some smallest subsets to take half of, or deal with some complicated adjustments to ensure taking half of every possible small subset doesn’t end up taking more than half of the total.