The county of Mercer is located in Missouri and was founded in 1845. There are 3,694 residents in Mercer who have access to courthouses in Princeton. 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. Missouri is part of the 8th federal circuit court as well.
There are 1,166 residents in Princeton, which is 1.6 square miles and 961ft above sea level.