Jefferson County USGS Mount Vernon Quad, Illinois, Topographic Map

Jefferson County is a Civil in the state of Illinois (county of Jefferson), located at latitude - longitude coordinates (also known as lat-long or GPS coordinates) of N 38.30005 and W -88.9334. Jefferson County is shown in the center of the topographic (topo) map, which is sourced from the United States Geographical Survey map USGS Mount Vernon quad. The nearest major town is Waltonville, IL.