What we found is that marketable lobsters weigh 1lb - 4lbs. A minimum size lobster will weigh around 1 lb., while a maximum size lobster will weigh between 3 - 4 lbs.
There are both minimum and maximum size measurements. The minimum size is designed to make sure that all lobsters are grown enough to breed at least once before they are harvested. The maximum size limit is designed to protect the breeding stock.
Maine lobster, also known as the American Lobster, is found in the waters between Eastern Canada and North Carolina, with Maine contributing to more than half of all lobsters caught in the United States.
The most plentiful and most popular size of Maine lobsters are 1 1/4 - 1 1/2 lb. each. If you are offered a smaller or larger lobster than this, you can guarantee it is not a genuine Maine lobster.
There are dozens of species of lobster, but you're likely to only run into two at your fish market. Check out these tips on how to buy a lobster shared by Seriouseats.com.