List of geographic centers of the United States
This is a list of geographic centers of each U.S. state and inhabited territory. The geographic center of the United States is northeast of Belle Fourche in Butte County, South Dakota (44°58′N 103°46′W), while that of the contiguous 48 states is near Lebanon in Smith County, Kansas (39°50′N 98°35′W).
Source: Wikipedia — List of geographic centers of the United States (CC BY-SA 4.0)