Some years ago I read a story about a Christian teacher who was asked, “Who do you think is in Hell?” The teacher responded, “There is only one person in hell. Jesus.”
The teacher’s point, to my recollection, was that since it Jesus came to liberate the oppressed, bring sight to the blind and proclaim the year of the Lord’s favor (Luke 4: 17-21), the last place to do this work would be hell. Additionally, wherever Jesus goes, there is liberation (Mark 5, for one example). There is no where we can go where the liberating love of God cannot find us (Psalm 139: 7-12).
Not even hell.
Therefore, as I recall the teacher making the point, the total population of hell is clear. Hell’s total population is 1. Jesus stands in the depths of hell as the crucified victim of heinous acts of violence sets all captives free.
Good news: If there is a hell, Jesus empties it.