The county of Irion is located in and was founded in 1889. There are 1,599 residents in Irion who have access to courthouses in Mertzon. 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. is part of the 5th federal circuit court as well.
There are 839 residents in Mertzon, which is 1.5 square miles and 2,201ft above sea level.