The Tragedy of Tirath
Elves tend to keep to themselves as much as they can. There are 3 major eleven cities Xuren, Torshen, and Nondran, although calling them cities is a slight misnomer. They certainly are population centers but they are much more integrated with the surrounding natural environment. Dwellings tend to be integrated into trees or woven into a copse of trees, other dwellings are built into natural caves. These cities, though they may contain hundreds of thousands of elves, might go unnoticed by humans passing through if they don’t know what to look for. Dwarves passing through would definitely notice, if for no other reason than the decidedly un-warm welcome they would receive. There are other smaller elven cities scattered in various places, there are even some places where elves live alongside humans in settlements much closer resembling human cities. Most elves though, are notoriously insular and especially don’t associate with dwarves due to a falling out that happened in the very dimly remembered past.