In Virginia, it's at the base of the windshield, centered. It used to be, there was a property tax sticker beside it, but if you still have one of those on your car, they can ticket you for having an impaired field of vision.
There was a bill in the legislature that would tie the inspection to the registration, with a tougher inspection process for those that wanted a 2 year registration. The main opponents that saw the bill shot down? Sherrif's association. Easiest ticket they can write, and many just pay it as opposed to taking a day of work to show that they got it fixed. Sadly, a short visit to the clerk's office ahead of time with proof of current inspection will usually see the ticket thrown out.