Le Roy serves as the primary urban center for this section of McLean County, characterized by a tight residential grid bounded by the modern interstate and local routes like Co Hwy 21. The surrounding landscape is defined by the agricultural sections of Central Illinois, where the drainage of the W Fork Salt Cr and the North Fork Salt Creek meanders through the township lines of t22n r4e and t21n r4e. These waterways have historically dictated the placement of small, localized landmarks that remain essential for genealogical research. Scattered among the farm roads are several early burial grounds, including Rutledge Cem to the west, Gilmore Cem near the town's edge, and Walden Cem further south toward the De Witt County line. The presence of Clyde Vance Lake adds a distinct water feature to the otherwise structured rural topography.
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1937 · Monticello
USGS Topo · 1:48,000
1943 · Monticello
USGS Topo · 1:62,500
1951 · Le Roy
USGS Topo · 1:62,500
1952 · Arrowsmith
USGS Topo · 1:62,500
1957 · Maroa
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
1979 · De Witt
USGS Topo · 1:24,000
1979 · Farmer City South
USGS Topo · 1:24,000