If you want to play men's instead of co-ed, there is the NTPSA leagues
http://ntpsa.futbol I play in one of the Over 40 leagues, but they have Open divisions (over 18), O-30, O-40, O-50, and even O-55. Spring season is already underway, but you can click on "Player looking for team" and someone will pick you up for the Fall. If you're O-40 you can email me at my username at gmail and I can see if we have a spot in the fall (depends on how many come back). Games are always on Sundays.