rukawakun,
please see post #16 for baddy places near downtown L.A.
the closest full-time badminton club to your place will be @ SGVBC in El Monte. About 1/2 hr-45 minutes drive east from your place.
I believe there is a Philippines Badminton club there. But i know there is also a pretty sizeable Philippines baddy club @ ABC (in Arcadia), which is much further from your place.
There is another place in Monterey Park where you can play, @ East LA College, which has a baddy club.
Going west-bound, there is the SMC baddy club out in Santa Monica College. They meet once a week on Sundays from noon til night time.
Btw, welcome to SoCal and BCDF!