New York
Source: http://www.agmrc.org/commodities__products/livestock/dairy/dairy_products_profile.cfm
Since whipping cream is a milk product I would guess Wisconsin would make the most. They are the leader in cheese and other milk products.
Yes, this is fine. Freezing is one best way to keep foods fresh. You have to be caeful with dairy products. They freeze well.
Wisconsin
Iowa
South Carolina
georgie
Wyoming
kerela
Texas
California.
Norfolk in the UK has a lot.
california
Andhra Pradesh