I’m closer to Annapolis annd Ft. Meade and we have two huge self-storage facilities that just opened up within a month less than a mile from each other.
There’s lots of military folks around here so maybe people are more likely around here to store stuff for a few years if they get deployed somewhere else and plan to move the family back after? I dunno.
I’ve used self-storage twice in my life: once in college over the summer before moving into a new apartment the next school year and once when we had our first child about a year before moving to a new city and larger house, which let us make room for baby stuff while keeping things we’d use when we had more space.