Did Harry die in Harry Potter and the Deathly Hallows?

Answer 1

He did not die all together, but he had something similar to "near death experience."

Harry hid his wand and invisibility cloak so that he would not be tempted to protect himself. He went into the forest where Voldemort was waiting. Voldemort performed the Avada Kedavra killing curse. Because Voldemort had taken some of Harry's blood, part of Lily's sacrifice still lived in him. Harry gave his life voluntarily to protect others. Due to these two things, Harry goes to an in between place that appears to be platform Nine and Three Quarters. He encounters the deceased Dumbledore, and they discuss what Harry needs to do. The piece of Voldemort's soul that was attached to Harry as a Horcrux was also there. Dumbledore tells Harry he has the option to go back and finish the fight with Voldemort. Harry, of course, does. He left the last Horcrux, the bit of Voldemort's soul, behind. This destroyed it.

Remember in Harry Potter, once you're dead, you're dead. Not even the Resurrection Stone brings you back. If Harry had actually died, he would not have been able to come back to defeat Voldemort, marry Ginny, have kids, and become an Auror.

Answer 2

No, Harry Potter lived throughout the Harry Potter series.

Answer 3

There is no such thing as death valley in Harry Potterand Harry survived the whole series.