Florida
Brevardpoly: a poly group for the Space Coast, Florida PolyCentral Discussion Socials, PolyOrlando, PolyTampa
Washington
Greater Seattle Poly Potluck Discussion and Suppor, Seattle Poly Intimacy Network (SPIN), Tacoma/Olympia Polyamory Group
Chesapeake Polyamory Network
A poly support, education, and advocacy group for the mid-Atlantic states.
Poly SE
Polyamory resources for the South-Eastern portion of the United States (Alabama, Florida, Georgia, the Carolinas and Tennessee).
Polynne - Polyamorous in Northern New England
The website for Polynne, an e-mail list for polyamorous people in northern New England. Intended for all those folks too far north to be on the Poly-Boston-chat list, for talking about anything they like and organizing support groups and socials.
Tri-State Polyamory
Public meetings for contact, introduction to polyamory, and socializing. Has local meetings in NYC and Bound Brook, New Jersey.