In my freezer
In the cove forest or under the forest.
The coldest water in the ocean is the bottom of the ocean.
It depends on were the water is, if it's from one of the Great Lakes and if so which one. I will update this when I find out.
Alaska
The coldest state in the US is Alaska. It is the most northern US state.
Water
Alaska.
The coldest place in the Ocean is in the deep water layer. The water temperature in this zone decreases slowly as depth increases.
Alaska is a state, not a city. If you're asking if the coldest city in the US is in Alaska, then probably, depending on exactly how you define "coldest city". At any given moment, it's possible (if not terribly likely) that the coldest temperature measured in any US city is for a city not in Alaska.
Barrow Alaska
Minnesota.
Antarctica. You can find it on a map