Hennepin County Jury Service. Hennepin County District Court " Phone: (612) 540-7436.You must complete the paper form located at the bottom of your summons, fill out the questionnaires, and mail them back in the envelope provided. Jury selection can take anywhere from half a day to a week or more depending on the type of case. Ample office style seating and good WiFi and cell service. Bring a headset if you plan to do calls. All trials must be in the district court. Hi, I got my first summons and will start serving in August at the district court level (outstate MN, not in the metro). Learn about the criminal justice process in Hennepin County including investigation, charging, criminal complaint, arraignment, trial, and sentencing. In the regular civil division, e.