Hmm, well there are certainly a good number of Zeds right from 240z - 350z here. Not that many 350's yet in the clubs here. Hard to know exactly how many Zeds in total though, with the number that get written off.
We have two Zed clubs in NZ, one that is purely 300zx(Z32) & 350's, and the other for all aged Zeds. Pretty close, active Zed community here, track days, grass gymkhanas, inter-club events and meets, trials, rallies, brunch cruises etc, etc.
We have volcanic & soft clay type soil here, so roads can be a bit pot holed in places, which is a nuisance, but you get used to it. There are heaps of roads with very few cars on them, and the scenery whilst driving, is hard to beat. So overall pretty cool.