For a start, you won't get much respect on here by referring to nudist places as "Colonies". That's like calling disabled people "Retards", or GBLTIQ people "Faggots". Colonies are for ants and lepers, not nudists. Secondly, if you want to know where the nearest nudist venue to you is in your area, then check out the site http://www.aanr.com
Colonies are a very antiquated term for it so I doubt you'll get many responses, plus the region is highly conservative. I don't know of any official establishments but I do know of quite a few landowners who host nudist get-togethers in the privacy of their own property. You'd have to know somebody to get involved with that though, it's more a social circle than a commercial offering.