As of 3:30 on Friday July 20, less than a day before the official publication of Harry Potter and the Deathly Hallows my library has 2035 reserves placed on the new Harry Potter book. The Hennepin County library owns 480 copies.
Strangely, the Minneapolis public library only has 251 holds on 120 copies
The Ramsey County Libraries has 443 reserves on what looks like 78 copies
The St Paul libraries have 382 holds on 110 copies
All told, in the Twin Cities Metro, there are 3111 holds on 788 copies of the book...all before the book is actually available to the general public.
In a general sense that I won't remember in a couple of days, I would be very curious how many copies are checked out in a 1, 3, 6, 12 month periods. Just out of curiosity. How many copies will the Hennepin County library move in this coming year?