General fact: 90020 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Mathematical fact: 90020 is an unremarkable number.
Trivia: 90020 is an unremarkable number.
Historical date: June 19th is the day in 1987 that Basque separatist group ETA commits one of its most violent attacks, in which a bomb is set off in a supermarket, Hipercor, killing 21 and injuring 45.