Free Mercer County, Illinois Topo Maps & Elevations

Free printable Mercer County, IL topographic maps, GPS coordinates, photos, & more for popular landmarks in Mercer County including Aledo, Viola, and Matherville.

County Borders


Mercer County, Illinois covers an area of approximately 568 square miles with a geographic center of 41.21257605°(N), -90.70468331°(W).

These are the far north, south, east, and west coordinates of Mercer County, Illinois, comprising a rectangle that encapsulates it. Please note that not all coordinates inside this rectangle will fall inside of Mercer County, Illinois, as it (most likely) doesn't fill up the entire rectangle.

North: 41.33429718°(N)
South: 41.06240845°(N)
East: -90.43467712°(W)
West: -91.11428070°(W)


According to data gathered by the Shuttle Radar Topography Mission. The lowest elevation in Mercer County is 167 meters (548 feet). This ranks Mercer County 86th in terms of lowest elevations when compared to a total of 102 counties in Illinois.

Mercer County's highest elevation is 270 meters (886 feet) which ranks it 27th in terms of highest elevations when compared to a total of 102 counties in Illinois.

US Topo Maps covering Mercer County, IL

The USGS (U.S. Geological Survey) publishes a set of the most commonly used topographic maps of the U.S. called US Topo that are separated into rectangular quadrants that are printed at 22.75"x29" or larger. Mercer County is covered by the following US Topo Map quadrants.

Aledo East PDF Order Print
Aledo West PDF Order Print
Alexis PDF Order Print
Blanchard Island PDF Order Print
Buffalo Prairie PDF Order Print
Eliza PDF Order Print
Joy PDF Order Print
Keithsburg PDF Order Print
Little York PDF Order Print
Matherville PDF Order Print
New Windsor PDF Order Print
North Henderson PDF Order Print
Orion PDF Order Print
Reynolds PDF Order Print
Seaton PDF Order Print
Toolesboro PDF Order Print
Viola PDF Order Print

Places to Visit In Mercer County, Illinois