My friend Alex who works at Michigan Milk Producers Association posted about this: "Milk is local! Each container of milk is identified by a 2-digit state code followed by a 3-digit processing plant code." If you don't live in Michigan, you can check exactly where your milk comes from by typing in the code at this site: whereismymilkfrom.
Our milk was a little harder to produce this weekend due to an 18-hour power outage. But thanks to two generators, we were able to keep milking, provide the cows with water, and keep all the milk in the cooler cold ... so it can get stamped with a code and sent to you!