Gryffindor.
Sirius Black (Padfoot) was the only member of the Black family to be placed in a house that wasn't Slytherin.
She was in Gryffindor House at Hogwarts.
Cho Chang is in the house Ravenclaw in Hogwarts
Hufflepuff.
The house of Salazar Slitheryn at Hogwarts,the house stands for ambition.
Pansy Parkinson was in Slytherin house.
James is Prongs, Remus is Moony, Sirius is Padfoot and Peter is Wormtail.
She was in Gryffindor House at Hogwarts.
Yes, Sirius is Padfoot.
Cho Chang is in the house Ravenclaw in Hogwarts
The house of Helga Hufflepuff at Hogwarts,the house stands for kindness.
The history of the padfoot is described on the related link.
That is unknown. She may not even have attended Hogwarts.
Rubeus Hagrid was in Gryffindor at Hogwarts School of Witchcraft and Wizardry. Hagrid was in the Gryffindor house.
Slytherin.
Hufflepuff.
The house of Godric Gryffindor at Hogwarts,the house stands for bravery.
The house of Rowena Ravenclaw at Hogwarts,the house stands for smarts.