An estimated 850,000+ were Holocaust victims at Treblinka. It had the highest death toll after Auschwitz.
A widely accepted figure is about 870,000.
The most common way people died in Treblinka was by Gassing but not by Zyklon B but instead by Carbon Monoxide.
mainly Jews.
Janusz Korczak, a Polish-Jewish educator and writer, died in the gas chambers of the Treblinka extermination camp during World War II. It is believed that he died with around 200 children from his orphanage, whom he refused to abandon.
There were 1800 Roman Catholics classifed by the Nazis as Jews in the Warsaw ghetto, i will return if i find out where they (and how many in which place) died. It is most likely that most of them died in Treblinka rather than the ghetto.
The number of survivors of Treblinka II (the extermination camp) still alive at the end of World War 2 is given in the Wikipedia article on Treblinka as 40 (forty). (Compare this with the usual estimate of at least 850,000 victims slaughtered). Please see the link below. In addition, there was an older labor camp, Treblinka I, which was mainly intended for non-Jewish Poles who did not "cooperate" with the Nazis. It was a concentration camp (not an extermination camp) and had more survivors. Apparently some prisoners from this camp were drafted for various tasks at Treblinka II, but otherwise the two camps were distinct and separate.
Treblinka (I) began as a concentration camp for Poles.
Treblinka II was an extermination camp and only about 40 people survived - that is, were still alive at the end of World War 2 in Europe. None of them is particularly famous.
http://www.holocaustresearchproject.org/ar/treblinka/trebmap3.jpg
shooting them and gas chambers
Treblinka extermination camp was created in 1942.
Treblinka extermination camp ended in 1943.