I doubt that operations such as Raven Rock have any 'civil' area's the Enclave is first and foremost a military operation. To assume that they have any role other than crushing those that oppose them.
I would however say that somewhere, Most likely quite a remote location... there are no doubts some small communities which would be recognisable as 'civilised' as we would know it.
Farming (crops / animals) etc is essentially quite easy with the right know-how and provided that the land isn't spoilt by radioactive fallout would provide healthy edible crops and would rear healthy animals.
I would expect any such area in post-apoc Fallout would be ignored for the most part by operations such as BoS and Enclave, being that as stated they would be remotely located, The advantages given probably wouldn't be offset by the logistics involved. Again this would lend it to be quite secure, only accessible with vehicles (which lets face it are in short supply) so defences wouldn't have to exactly be a priority of any such community.
So enclave controlled 'havens' perhaps not, remote self sufficient communities, probably.
Also, as some reference to this topic. I do believe that 'Vault City' could be considered - green streets, family life etc... and that was smack bang in the middle of nowhere (albeit on top of a functioning vault's entrance and quite heavily defended)