Cropper. Cooper. Normal. Bloomington.
Each of these places has been named as the place where the Gooks lived.
However, what about Rushville Center?
According to the book, Comedy: New Perspectives (p. 263), that was the the place where the Gooks lived.
In defense of the book, it does have a sweet dichotomy of life in Rushville Center versus the world of depression and WW II. I hope you take the time to read it.