Yes, everyone did, like they knew of prisons or courts.
No. Most Jews were unaware of the existence and purpose of the Concentration Camps and the Death Camps.
Many Jews were aware of the existence of concentration camps and the increasing persecution they faced in Nazi Germany. However, the full extent of the horrors and systematic extermination that would occur in these camps was not widely known until later in the Holocaust. Some Jews attempted to flee or hide, while others believed that the situation would improve or that they would not be targeted. In general, the information available was often incomplete or downplayed, leading to a tragic underestimation of the impending threat.
Bruno sawed a concentration camp, but did not know it was a concentration camp.
I didn't think she know that time .
It was hard for the Jews.They were forced to work and forced to wear stripy pyjamas and sleep together in grotty rooms they didnt know what was going to happen
Herman goering was in charge of the the first built concentration camp. I don't really know how many he killed.
Most Germans did know, at least that the camps existed. Some kidded themselves that they were just forced labor camps. Some knew they were death camps, but as it was "just Jews", they didn't care.
they werent, some jews were hiding
Pretty much all concentration camps had a railway track near to the camp where the deportees would arrive from. The concentration camp which people most likely to know which had a rail track going into the camp would be Auschwitz Birkenau.
Bergen-Belson concentration camp.
It is not clear what you want to know. The smallest camp? The one with fewest survivors, or a camp one hardly ever hears about?
Your question is unclear. As a many Jews were in the camps it is safe to assume that they knew of them.