same thing that happened before where Minnesota's NFL team being the Vikings made a reference back to the large number of scandavians living up there.
you can go down the list Germans, Italians, Greeks, chinese, japanese, every major ethnic/nationality group created their own exclaves. heck pretty much every city has a jewish neighborhood or two with only synagogues, restaurants closed on Saturday with kosher only menus, see Jewish families walking around dressed up for synagogue looking very "un American". funny how they never need to assimilate.