There are as many as 30 million dead people with Facebook accounts, but the social media giant is simply so massive that these numbers are dwarfed by the total user count. With more than 3 billion active users, 'dead people accounts' are likely only around 1% of the total user base.
Does Facebook keep dead people's accounts?
The content the deceased person has shared remains on Facebook and continues to be visible to the audience it was shared with. No one can log into a memorialized account. Memorialized accounts cannot be changed if a legacy contact is not listed.
What happens to dead people's Social Media?
Content that had been posted on the profile remains there. If the person who's died planned ahead, they could've simply assigned a “legacy contact” in their settings. Being a legacy contact means you can create a post noting that the person has died, and then you can manage the account.