The Southern Isles are presumably located somewhere near or within the region of Denmark. This is suggested in Frozen Fever, where, after Elsa accidentally sneezes into the horn and causes a huge snowball to be launched, it travels all the way to the Southern Isles, which is shown to be roughly where Denmark is located. It is an extremely unhappy place as the King, Hans' father, taxes the people harshly and brutally puts down any defiance. Twelve of his sons are similarly awful people.
- In the Broadway musical, Hans describes the Southern Isles as "a very small kingdom on a very small island."
- In Conceal, Don't Feel, it is mentioned that Hans's family is relatively new to running the kingdom.
- The islands in the top has a striking resemblance to the Philippines.