# Camp name Country (today) Camp type Dates of use (YYYY/MM/DD) Est. prisoners Est. deaths Sub-camps Webpage 1 Alderney Guernsey Labour camps 1942/01 – 1944/06 6,000 700 Lager Borkum, Lager Helgoland, Lager Norderney, Lager Sylt 2 Amersfoort Netherlands Transit camp and prison 1941/08/18 - 1945/04/19 37,000 650 3 Arbeitsdorf Germany Labour camp 1942/04/08 - 1942/10/11 600 min. none 4 Auschwitz-Birkenau Poland Extermination and labour camp 1940/05/20 - 1945/01/27 1,300,000 1,100,000 min.[12] with 400,000 recorded arrivals [13] list of 48 sub-camps with description at the Auschwitz-Birkenau State Museum [14] [15] in August 1944 [12] [14] [13] 5 Banjica Serbia Concentration camp 1941/06 - 1944/09 23,637 3,849[16] 6 Bardufoss Norway Concentration camp 1944/03 - ???? 800 250 [17] 7 Bełżec Poland Extermination camp 1941/10 - 1943/06 434,508 min.