The county of Mercer is located in Illinois and was founded in January 13, 1825. There are 16,434 residents in Mercer who have access to courthouses in Aledo. In general, each county has a full set of courts, from traffic court to superior and appellate court; supreme courts are usually located in the state capital. Illinois is part of the 7th federal circuit court as well.
There are 3,640 residents in Aledo, which is 2.4 square miles and 736ft above sea level. It was settled in 1855 and is governed by a local government.