Bynum ISD Physical Address 704 Toliver Bynum, Texas 76631 Mailing Address P.O. Box 68 Bynum, Texas 76631 Phone: 254.531.2341 Fax: 254.531.2342 Bynum ISD is located in central Texas in Hill County. It is approximately 6 miles southeast of Hillsboro, Texas. The school is located on the corner of State Hwy 171 and FM 1242. The school district primarily consist of farming and ranching. Location in Texas School location Aerial View