Scandinavia isn't a country, it's a cultural region covering the countries of Denmark, Norway and Sweden. But these 3 countries are relatively small.
Denmark.
Scandinavia is four countries: Norway, Sweden, Denmark, Iceland.
Denmark
Scandinavia is not a city, but a part of Europe.
The biggest city in Scandinavia is Stockholm, Sweden.
Sweden has the biggest area in Scandinavia.
Stockholm
By population, Stockholm.
Copenhagen, Denmark
In Norway.
Stockholm in Sweden.
No. It is the second largest city in Norway.
Bergen is the next biggest city in Norway.