how many of hitlers siblings lived to see world war 2?

Only one full sibling was still alive at the outbreak of WW2. Paula died in 1960. Four others died in childhood.

His father had two children by a previous marriage, so they were Hitler's half-siblings. Both lived past world war 2: His half-sister, Angela died in 1949. His half-brother Alois was born in 1882 and died in 1956.

been awhile but i think one sister and one half sister, don't think any of the rest even survived to become adults

Only his sister,