Colo. Rev. Stat. § 16-2-108
The place at which the summons directs the defendant to appear shall be the place at which the court having jurisdiction over the matter customarily sits. It shall be a location at which the county court of the county in which the offense was alleged to have been committed sits regularly unless otherwise provided by this section. If the summons and complaint is issued by a peace officer and served personally upon the defendant by such peace officer, it may direct appearance at a location in which the county court of an adjoining county sits regularly if such a place is agreed to be more convenient by both the peace officer and the defendant. Costs and fines, to the extent provided by law, shall be retained by the county in which the matter is heard.
C.R.S. § 16-2-108