I would have to say thousands, but then again 'group' is not very specific.
There were many other groups that had people killed by Hitler and the Nazis, but the Holocaust was the specific actions against the Jews, therefore there were no other groups killed in the Holocaust. The only other group which suffered similar persecution to the Jews was the gypsies.
People that were killed during the Holocaust in addition to the millions of Jews were the Freemasons, Jehovah's Witnesses, homosexuals, and people with disabilities. Also killed were Gypsies, Poles, Soviet POWs, and slaves in Eastern Europe.
6 million
The groups that were sent to the concentration camps during the holocaust were Jews, Roma (gypsies), homosexuals, Soviet prisoners of war, Jehovah's Witnesses and many others.
An estimated 11 million people were killed in the Holocaust, roughly 6 million of them being Jews. Other groups the Nazis targeted for extermination were people of Romani, Polish, Russian, or Slavic origin, Jehovah's Witnesses, the mentally handicapped, the physically disabled, POWs (especially Soviet), homosexuals, political leftists, and freemasons. Note: People of colour were killed as well, but their killings were far less systematic than those of the groups listed above, so they are not classified as casualties of the Holocaust.
In Holocaust there were killed 5-6.5 millions Jews. They were from all the European countries, except (or not so much) United Kingdom and Soviet Union (Russia).
I assume you mean socially awkward. There are no records of the number of "a-social" people killed by the Nazis. After all, there are no groups to speak on their behalf.
* Yes. The Nazis treated the Jews as a race, not a religion, so many of the victims of the Holocaust, especially from Western and Central Europe, were not practicising Jews. * The Nazis also slaughtered Soviet 'political commissars' whom they took prisoners. These were Marxist-Leninists (Communists). The Nazis also killed other Soviet prisoners of war.
6,000,000 Jews were killed during the holocaust.
The Holocaust was the attempted extermination of Europe's Jews. About six million were killed during the Holocaust.
No one was killed for being Buddhist in the Holocaust.
Holocaust victim usually refers to people who were killed in the Holocaust, so it is not clear who you are referring to: refugees from Nazi Germany? Holocaust survivors? Both groups? I imagine that the main library in Houston or the municipal archives would have a good idea.