You're being intentionally obtuse. As is immediately apparent if you look at a population density map of Sweden[0], the vast majority of the population is concentrated in the southern part of the country.
If you meant population, you should have said population. The phrase "postage-stamp-sized European countries" is pretty broadly understood and used to mean things like Andorra, Lichtenstein, Luxembourg, Malta, Montenegro, &c.
By no stretch of the imagination is interpreting a widely-used phrase as it's widely used "being intentionally obtuse."
At 174K mi^2, Sweden is larger than California's 164K mi^2.