Board Thread:Boruto Discussions/@comment-32196880-20170910080526/@comment-734582-20171014081450

LegionZero wrote: Clans are more than a family structure. I changed it to be more accurate. A Clan doesn't have to be a family structure. It can be, but doesn't have to be. More than that, a clan is a political structure, where the clan head has (formal) power over the clan and it's decisions. Considering that the Uzumaki have no political structure going on, the clan can be considered lost. Alternatively, considering only he bears the name outright, Naruto and his family can be considered the "uzumaki clan", with Karin being an exile.

Clans however, can vary in form depending on where you are on the planet. It doesn't have to be family, or it can be family mixed with non-family. Either way, what's important is that it's a political unit.