[greenyoda]

It's possible that if a company is very small, it works out of a co-working space or has all of its employees working remotely in different locations. They may be hiding this to make it appear to customers that they're bigger than they really are.

But I agree that not telling prospective employees where they're located will deter people from applying. For example, two places within a few miles of each other in NYC can have drastically different commutes (time, comfort and/or safety), so there's no way I'd consider applying for a job if I didn't know the company's location.