You wouldn't need legions of people to track IP addresses, just an IP database and a good programmer. Google and FaceBook track locations of their visitors. In fact, your location is being tracked by Google on this website - it uses Google Analytics.
The locations are not always 100% accurate. There is a reason for this - some IP blocks are allocated to large areas, rather than small. Brooklyn NY has lots of IP addresses and if you have one of them, you are 99.9% likely to be in Brooklyn. Some IP blocks are simply allocated to the State of New York. That is a large area and many websites try to guess where you are. Double07, your internet provider probably has several blocks of IP addresses they can assign you and might give you a more general IP address on occassion, sometimes to share the load. Websites may try to guess your location more accurately but they cannot be guaranteed to be right. Some do it off the longtitude and latitude which can be anywhere in the State! There is one IP block that is allocated the the area of the 'EU' - not much help!
I just see the Society working out how many views compared to the number of publishers in the area. For example, if North Carolina has a 42% download rate, Texas 44%, Detroit 41% but Chicago is only 6%, then surely they will inform the COs serving the Chicago areas?
Digital downloads are same as printed versions, so even if they edit the future edition...
I understand that there will be articles on the site that will not be put in print. You have got me thinking on that one though, they will have to print the study edition and I suppose that one will have the most important information in it.