How many children has Ned Stark?

Ned Stark has six children: Robb, Sansa, Arya, Bran, Rickon, and Jon Snow, who is his illegitimate son, though he raises him as part of the family. His legitimate children are Robb, Sansa, Arya, Bran, and Rickon. Jon Snow's true parentage is revealed later in the story, making him a key character connected to the Stark family.