Hillsboro and its surrounding communities are defined by a complex network of man-made water features and small-town expansion in the mid-2010s. The landscape is dominated by the Shoal Cr Watershed Impoundment Reservoir and the expansive Lake Glenn Shoals, which provide a sharp contrast to the geometric grid of the Illinois prairie. Industrial history is visible at the southern edge of the map, where the American Zinc Smelter Company Large Lake sits near Taylor Springs, reflecting the region's manufacturing legacy alongside more contemporary developments like Fairmont Place and Hillsboro Heights.
125 named features on this map. Tap any name to fly to it.
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This is the sole edition of this map. No revisions or reprints were ever made.
1915 · Mount Olive
USGS Topo · 1:62,500
1923 · Raymond
USGS Topo · 1:62,500
1925 · Raymond
USGS Topo · 1:62,500
1944 · Mount Olive
USGS Topo · 1:62,500
1946 · Nokomis
USGS Topo · 1:62,500
1947 · Hillsboro
USGS Topo · 1:62,500
1949 · Hillsboro
USGS Topo · 1:62,500
1949 · Nokomis
USGS Topo · 1:62,500
1958 · Decatur
USGS Topo · 1:250,000
1961 · Decatur
USGS Topo · 1:250,000