Mason County, Administrative county in central Illinois, United States
Mason County is an administrative county in central Illinois that extends along the Illinois River. The land features sandy soils formed during the last ice age and creates a distinctive landscape across the region.
The county was established in 1841 from parts of Tazewell and Menard counties. It was named after George Mason, a key figure who supported the Bill of Rights.
Residents trace their roots mainly to German immigrants, alongside English, Irish, and American ancestry that have shaped local customs. This heritage is visible in how the small towns and rural communities maintain their character.
Havana serves as the county seat and main hub for administrative services. The area is largely rural, so planning ahead and allowing time to travel between locations is helpful.
Sand Ridge State Forest, one of the state's largest forests, lies within the county and covers extensive woodland. This forest is an important natural area and recreational retreat for visitors.
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