If you have a geo code file with latitude and longitude details then you will definitely able do this.
Let me know how exactly your data set is!! I will try to help.
Sandeep, thank you for prompt reply!
It seems that I put misleading text above.
Instead of 'I've got a workbook with Specified Geo Areas, say Center, West, South, etc'
I've got a workbook with arbitrary assigned text Center, West, South, etc, which are implicitly meaningful)
So, nope, the file doesn't contain any latitude and longitude details.
This is what I want to tell Tableau using calculated field or whatever.
That makes sense Yuriy.
Region is not a defined geographical component in tableau. Hence pointing a dedicated map area is not possible by default.
That can be done by importing your custom geocoding I Guess.
In other way if you want to show states in one groups then you can try grouping states into those regions and then put color coding as per region.
I am not sure how much its helpful to your requirement but as of now I can suggest this much!!
It will be helpful to understand your query in better way if a sample screen image of your required output will be shared!