Welcome to our forum!
Can The Same Name Be Registered In The Same State. How Does This Work?
As far as I know, if you register your business as a dba in the county court house, you can't have any other business in that county with the same name. But that doesnt stop a business in the next county over from having the same name.
If you register a corp with the state, no other corp in that state can have the same name.
However I think there are other issues that factor in. The best thing you can do is to try and pick an original name that is not being used. It will save you any hassles in the future of having to defend it.