Absolutely, the majority of the population does live in "small houses" with 1-2 families but over 40% live in "Multifamily residential" with more than 2 families per building. I suspect that most of the "Multifamily residential" buildings are considered to be apartments.

The country is very sparse but that's mainly because there is a lot of land with absolutely nothing except trees. Most live in cities or towns where it's much denser (obviously nowhere close to Paris or London though)