Like many people, Voldemort personally killed

How many people did Voldemort kill?

Comes three years later, in the advent of Pottermore ...

By my count, Voldemort killed at least eighteen people and more than hundreds.

Voldemort's known victims:

  1. Tom Riddle Sr.
  2. Thomas Riddle
  3. Mary Riddle
  4. Hepzibah Smith (by proxy over poisoned cocoa; Hepzibah's house-elf Hokey was blamed for her murder)
  5. An Albanian farmer
  6. Bertha Jorkins
  7. A muggle trample
  8. Moaning Myrtle (by proxy over the basilisk in the Chamber of Secrets)
  9. James Potter
  10. Lily Potter
  11. Wormtail (by proxy via the magical silver hand that Voldemort gave him in the Goblet of Fire gave)
  12. Snape (proxy through Nagini)
  13. Dorcas Meadowes ( Order of the Phoenix , Chap. 9)
  14. Charity Burbage ( deathly Hallows , Chap. 1)
  15. Frank Bryce ( Goblet of Fire , Chap. 1)
  16. A woman in the wandmaker Gregorovitch's house ( deathly Hallows , Chap. 12)
  17. The wand maker Gregorovitch ( deathly Hallows , Chap. 14)
  18. Gellert Grindelwald ( deathly Hallows , Chap. 24)

I've counted eighteen confirmed deaths from the books (please check my math).

Implied Deaths from Voldemort:

It is also strongly implied that Voldemort himself was Amelia Bones, Head of the Magical Law Enforcement Division ( Half-blood prince , Chap. 1) and Order of the Phoenix Member Emmaline Vance ( Half-blood prince , Chap. 1) killed). Bathilda Bagshot is also a likely victim ( Deathly Hallows , Ch. 17), but it is not expressly stated that Voldemort killed them. Also, Cedric Diggory was killed by Wormtail on Voldemort's orders. While Voldemort didn't kill Cedric himself, he was involved in Cedric's murder.

The Inferi:

JK Rowling writes about Pottermore:

The Inferi that Harry and Dumbledore met in the depths of the lake in Harry Potter and the Half-Blood Prince encountered were mostly vagabond, homeless Muggles who Voldemort had murdered for this purpose on his first rise to power, although some of them were the earthly remains of wizards or witches who "disappeared" without explanation.

Pottermore - Inferius - Half-blood prince Note: For Pottermore users must have a (free) account.If you don't have or don't want a Pottermore account, I would suggest Googling, "What is an Inferius?"to be redirected directly back to Stack Excange, to confirm.

Estimation of the number of inferi:

For example, JK Rowling's comment on the Inferi States killed Voldemort stray and / or homeless Muggles to turn their bodies into Inferi. I checked that Half-Blood Prince to to see if Harry is in the chapter The cave guessed how many Inferi came out of the lake when he touched the water while trying to get a drink for Dumbledore. There's no guess, but it was clearly a good number. I read the sections on Inferi and Half-blood prince looking for a number in Bob McCabe's book Page to Screen: The Complete Film Making Journey . Tim Alexander, visual effects supervisor, simply says, "The underwater world was difficult because of the sheer number of Inferi and the interactive light from the fire." (Page 192)

Judging by concept art, Voldemort must have killed at least hundreds of muggles and wizards to determine the number of Inferi guarding his Horcrux in the sea cave. JK Rowling also describes the lake in the cave as "huge" on Pottermore; One huge and presumably deep lake could potentially hold thousands of Inferi, all of whom were killed and then bewitched by Voldemort.

Conceptual art by Rob Bliss from the book Bob McCabe (page 193). Photo quality isn't the best as I took it with my phone in low light, but it should show the general idea:

additional information

6/3/15 - While researching another question, I came across the following piece in which Dumbledore explains to Harry what Inferi are:

"They are corpses," said Dumbledore calmly. 'Corpses bewitched to do a dark wizard's commandment. Inferi, however, have not been seen in a long time since Voldemort was last powerful ... he has Naturally killed enough people to make an army out of it . This is the place, Harry, only here ... '

Half-blood prince - page 63 - chapter four, Horace Slughorn - Bloomsbury

An army is not made up of a few people (or Inferi, so to speak). This affirms that Voldemort's grueling exploits were extensive and extremely far-reaching┬╣.

┬╣ Oops, I forgot that DVK included the above quote in his original post.I'll leave it in my answer because it really shows how violent Voldemort was and how little he valued life which I think supports my answer.However, everyone is free to edit it.

SQB

Wasn't Moaning Myrtle killed by the Basilisk rather than Voldemort?

Valorum

@SQB - Don't move. I have a loaded basilisk and am ready to use it.

Slytherincess

@ SBQ - Yes, thank you. I edited that in. I also got Cedric Diggory - he was killed by a proxy via Wormtail. I think everything is fine now. :) :)

DVK-on-Ahch-To

@Slytherincess - proxy shouldn't count for human followers (so no Edward, despite Dumbledore's usual lies). or you have to include pretty much all of the DEs that have ever been killed. Nagini or basilisk count, however.

Nathan Merrill

You forgot one; Voldemort killed himself.