The Northern Sword Coast consists of four significant Human Nations
The Confederation of Icewind Dale
The Republic of Luskan
The Principality of Neverwinter
The Principality of Zarovich
These nations are all fairly small compared to the large nations in the Central Sword Coast, but still very large on average.
There is a significant demi-human population in the region, with both Elves, Haflings and Dwarves living all over the region.