Mount Vernon and its eastern surroundings are characterized by a network of rural settlements and family cemeteries that define the local heritage of Jefferson County. The landscape is segmented by numerous small waterways, including Sevenmile Cr, Twomile Cr, and Fourmile Cr, which flow through the agricultural terrain. The presence of smaller communities like Opdyke, Marlow, and Bluford illustrates the persistent local-center pattern common to southern Illinois, while Mount Vernon Airport serves as a modern logistical anchor for the region.
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1933 · Mount Vernon
USGS Topo · 1:48,000
1939 · Ina
USGS Topo · 1:62,500
1940 · Mount Vernon
USGS Topo · 1:62,500
1942 · McLeansboro
USGS Topo · 1:62,500
1943 · Ina
USGS Topo · 1:62,500
1945 · McLeansboro
USGS Topo · 1:62,500
1947 · Wayne City
USGS Topo · 1:62,500
1958 · Belleville
USGS Topo · 1:250,000
1962 · Belleville
USGS Topo · 1:250,000
1964 · Opdyke
USGS Topo · 1:24,000