What is the standard thickness of home interior bedroom doors?

Rear entry doors should be at least 32" but if you do not have a 36" door in your home putting that in may be the better choice to allow furniture and appliances to pass easier through the opening. Keep in mind that those are dimensions of the actual door your framed opening needs to be 2" larger then that, so a 32" door would require a 34" framed opening.