Between 1820 and 1840, two migrations settled Illinois. One, from New York and New England, settled Northern Illinois. A second stream from Ohio and Wabash River valleys, settled in Southern Illinois, including Coles County.
Prior to 1820, there were no permanent settlements in the County. This was partly because the treaty with the Indians relinquishing their title to the area was not made until 1818 and because as late as 1820, there still battles between Indians and government surveyors in the Wabash River valley. After the Indian threat had been squelched, settlements began to fill up the interior of Illinois with a series of short (30 - 60 miles) migration.
Many pioneers migrated through Coles County, because it was on one of the routes West from Indiana and Kentucky. One major route was the Vincennes Trace, which passed from Vincennes, Indiana to Kaskaskia in Southwestern Illinois. Normally this route would have passed about 50 miles South of Charleston, however, frequent flooding of the Wabash and Embarras rivers in this region necessitated passing North through Coles County. Many settlers crossed the Embarras River South of Charleston.
A second factor determining settlement of Coles County was its topography. In contrast to areas to its North and West, Coles County was located on the timberline. Two major rivers drained the County: the Embarras on the East side of the County and the smaller Kaskaskia (Au Kas or Okaw) on the West side. Along the rivers and their tributaries were forests. Groves were scattered throughout the County. Surrounding the wooded areas, primarily in the Northern and Western parts of the County, was a broad, flat prairie known as the "Grand Prairie." This land was wet and swampy and was not drained for cultivation until the last half of the century.
Early settlers in Coles County preferred to start homesteads in the timberlands. Timber provided a source of building materials and fuel. The wooded land was actually more tillable at the time, because of much of the prairie was under water. Many settlers preferred the timberland for no other reason than it looked like home. The vast majority of early settlers came from points South and East - wooded areas of Indiana, Kentucky and Tennessee.
Whatever the reason, the timberland was settled first, primarily by Southern stock coming to the County by way of the Ohio and Wabash River valleys. The prairie was settled much later primarily by persons of Eastern stock. This difference was reflected in many aspects of the early Coles County culture, including social life, politics and house types.