Well, grab the bull by the horns and set one up! ;-)
That's pretty much what we did in upstate New York, and it has grown quite nicely.
It can be as simple as a mailing list, or a Yahoo group, or Facebook Google+ - your choice of free social networking is huge right now.
And it doesn't have to be a big organisational effort, either. Pick a coffee shop that is fairly central and say "We'll be there at 3pm on Sunday, and we'll have a parrot figurine at our table" (or some other way to be identified).
It's low-pressure and it gets things started - if nobody turns up, then you at least can have a nice cup of coffee in comfort