Heaven

Heaven is a wonderful place. God created heaven. It has been stated that only four angels have seen God.

Known inhabitants
God (Ruler)

Jesus (God's son)

Lucifer (Alive now known as the devil)

Zachariah (Alive)

Archangels

Anna Milton (Anna is currently in heaven)

Uriel (deceased)

Castiel (deceased)

Unnamed or unidentified angels

Heaven council
God (founder)

Known archangels
Zachariah (Unconfirmed?)

Michael (Defeated Lucifer)

Gabriel (This angel has yet to make an appearance in this show)

Raphael (This Angel has yet to make an appearance)

Lucifer (At one point Lucifer was an archangel)