never a jw: Agree, 330 is too small, but over 3,000 is too high. My bet is somewhere between 1K and 2K.
Why do you think that?
- South Dakota Population = 865,454
- US JW-to-Population Ratio = 263
- Therefore JWs in South Dakota is expected to be around = 3,290
The article says 330, therefore most likely they've missed the last '0'.
Additionally it appears that the figure of 3,330 was actually obtained in the first place by doing the above calculation.