Dumb SEO Questions

(Entry was posted by Steve Boni on this post in the Dumb SEO Questions community on Facebook, 12/18/2013).

Would putting each region in its own sub-domain make any difference?

Hi Guys,
Thanks for all the help you have shared thus far...

I am still working for this client in the HVAC field, selling to home owners and he wants to target about 30 different regions each containing several communities, my thought was to do it by county.

I am using php to create a page for each region and there will be about 3 variables on each page,  
1.Region
2.names of communities within the region
3.Map of the region
The rest of the content will remain the same.

Just wondering if this is a bad idea from the standpoint of duplicate content?

Would putting each region in its own sub-domain make any difference?

Thank  you?
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