Take your tongue out of your cheek. You're not far from wrong.
When you include the farmers, that applies pretty much for the nation as a whole. It may even be less, since farmers are less than 1% of the population. Where I grew up out in West Texas, most family farms were 2 to 4 square miles in size, even bigger for those with big families, like all those german catholic farmers in St. Lawrence, Wall, Rowena, Olfen, and Miles.