File the following alongside the goat census of Maine.
Maine livestock farms have just 3 percent of the hogs they had 100 years ago. It wasn’t a sudden decline in demand for hogs that drove the change, but Midwest came to claim the lead in U.S. hog farming.
In one map, here’s where all the hogs have gone in the last 100 years (thanks, U.S. Department of Agriculture):
New England saw an almost uniform drop in hog farming in the last 100 years, but that wasn’t the story all along the East Coast. North Carolina is in that area alongside Iowa, the hub of hog farming in the Midwest.
For Maine and New England, the drop in “hog inventories” looks a little clearer in this view:
Admittedly, there’s no particular reason for examining Maine’s hog populations at this moment in history.