The 4042n region boundaries are:
From South to North, the 40th parallel north to the 42nd parallel north. From East to West, the 100th Meridian outside of Lincoln, Nebraska, to the Utah-Colorado State Line. The gradation shown in the graphic represents the gradually increasing accuracy of the 4042n Project's core statement: A Still Wild West. At the furthest point East (Lincoln, Nebraska), the idea that defines the 4042n project is perhaps least noticeable. Somewhere around western Nebraska, however, the gradation has turned solid, illustrating full impact on the region.