You probably won't find much love for the topic here but Zug, Switzerland is the archetype "crypto valley" now.

Besides that, there's a lot of western cryptocurrency enthusiasts in South East Asia for many years now, at startup events there cryptocurrency is a painfully common topic that crowds out the scene a lot. So I'd also add Singapore and Bangkok to the list, locals seem to have embraced it quite a bit too, a surprisingly large amount of big dollar billboard advertising for exchanges, etc around.

Costa Rica seems to be quite popular also.