I am not sure to which book you're referring, but I will give you the list of the ones that are know to be dead:
Bellatrix Lestrange
Evan Rosier
Gibbon
Igor Karkaroff
Peter Pettigrew
Regulus Black
Severus Snape
Wilkes
Lord Voldemort
In the beginning of The Seventh Harry Potter Book, when The Death Eaters and Voldemort are chasing Harry.
Luna was captured because her father Xeno was writing in his magazine The Quibbler to help Harry Potter and not the Death Eaters.
It's unspecified, but he was tortured by death eaters trying to find Harry.
No, Xenophilius Lovegood does not die in Harry Potter and the Deathly Hallows. Hermione makes sure that the Death Eaters see Harry when they escape from Lovegood's house so that they know he wasn't lying.
Not all the characters do die. Lots of death eaters do because you have to feel like harry is achieving something, but it can't just be the bad guys that die so unfortunately some goodies have to too.
Not all the death eaters die in Harry Potter.
No, Harry Potter survived.
In the beginning of The Seventh Harry Potter Book, when The Death Eaters and Voldemort are chasing Harry.
A lot of people die on the Harry Potter. Fred died because of an explosion when Death-Eaters broke into the school.
yes, in the final book, in a battle against the death eaters
Yes, he is murdered by Death Eaters during the final battle.
voldemort bellatrix dolohov (i think) greyback (i think) scabior snape
Luna was captured because her father Xeno was writing in his magazine The Quibbler to help Harry Potter and not the Death Eaters.
Yes, he dies when after he saves Harry, Hermione, Ron, and others from the death eaters. Pretty sad, =(
No, the ones who didn't die (with the exception of the Malfoy's who switched sides) were imprisoned in Azkaban.
She didn't die, her son died from a werewolf bite because she refused to help the Death Eaters.
Voldermort dies, but he's not a Death Eater so: # Severus Snape # Bellatrix Lestrange # Peter Pettigrew, aka Wormtail