The boundary between De Witt County and Piatt County divides this agricultural landscape of central Illinois, where the village of Mansfield serves as a local hub. The terrain is defined by its drainage network, including the slow-moving Salt Creek and Trenkle Slough in the northwest, and Goose Creek winding southward toward the settlement of Galesville. Transportation is anchored by the corridor of Old US 150 and Route 150, which connect Mansfield to Harris and Farmer City. This area maintains a strong rural character with specialized aviation facilities like Van Gorder Airport and Niklaus RLA Airport positioned among the fields. Genealogists and local historians can find established burial grounds including Mansfield Cemetery near the village and the more isolated Mackey Cemetery to the southeast, both of which anchor the long-settled farming families of these two counties.
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1907 · Mahomet
USGS Topo · 1:62,500
1928 · Gibson City
USGS Topo · 1:62,500
1937 · Monticello
USGS Topo · 1:48,000
1943 · Monticello
USGS Topo · 1:62,500
1952 · Arrowsmith
USGS Topo · 1:62,500
1957 · Gibson City
USGS Topo · 1:62,500
1957 · Mahomet
USGS Topo · 1:62,500
1958 · Peoria
USGS Topo · 1:250,000
1961 · Peoria
USGS Topo · 1:250,000
1963 · Peoria
USGS Topo · 1:250,000