Same question for the hospital station. Come on Bethesda, this is something you're usually good about, giving people beds. Even lowly bandits in a skyrim cave all had beds. What happened?
They're probably meant to live in one of the inaccessible parts of the big factory building. There's even a whole tower on there. Since it's a company town this would make perfect dystopian sense.
One thing that would have helped immersion in all the cities (and the Den) would have been to schedule the citizens and minor named NPCs to take an elevator to an inaccesible floor with an empty room for a few hours. If they could build all the space for that would be cool, but especially for the unnamed NPCs it might be impractical.