I can assert that on the European cities I move around, there is usually some kind of Salsa club, eventually extending to other themes like Tango, Bachata, Kizomba, Zouk,...
Any city will have ballroom, swing, salsa, tango, etc...
Even in rural areas you will find line dancing.
This is aside from informal dancing at bars and clubs which exists in every place I've ever lived in (6 countries in the Americas so far)