While there is no single/reliable source of information on this topic,
there are a bunch of places one can look.

The link below is a list of such web pages:
http://sports.groups.yahoo.com/group/DCBadminton/links/Where_to_play_Badmin_0011\
22220189/

Basically, if you want to know about where/when to play in a specific
past of the DC / Northern VA / Maryland area, and you have particular
needs (metro access, etc. etc.) please post a question here, and
someone will respond with specific guidance.

Cheers,
- Aamir