What is the population of the city located on the highway that is in the United States running parallel to/overlapping Interstate 39?
Shobonier, Illinois:  The population for the Shobonier ZIP code area, including rural areas surrounding the community, was 839 at the 2010 census. U.S. Route 51: U.S. Route 51 is a south-north United States highway that runs for 1286 mi from the western suburbs of New Orleans, Louisiana to within 100 ft of the Wisconsin–Michigan border. U.S. Route 51:  Much of the highway in Illinois and southern Wisconsin runs parallel to or overlaps Interstate 39 (I-39), and much of the route in several states also parallels the Illinois Central Railroad.
839