Eugene School District 4J is a K–12 public school district in and around Eugene, Oregon. The district spans 155 square miles in Oregon’s southern Willamette Valley. Most of the city of Eugene (about 85 percent) lies inside 4J’s boundaries, as do the town of Coburg and a small part of Linn County to the north. 4J’s administration building, the Education Center, is located at 200 North Monroe Street, Eugene, OR 97402. Most central departments are located there.