As a member, only two (or three depending on how you county pre and post- hunt divorce), Bull Run and Loudoun/Loudoun West. Prior to that I suppose I could claim honorary starving student status with Mr. Haight’s Litchfield County Hounds and the old Woodside Hounds in Aiken as roommate’s Dad was MFH/huntsman.
As a guest, I’ve lost count, but just pondering quickly, think I’ve hunted in 13 different states.