My boundries: Red River on the north, south from Bonham to Greenville to Terrell and then to Ennis. Follow I-45 south from Ennis to Huntsville (Coriscana, Fairfield, Buffalo, Centerville, Madisonville) to Huntsville. Due east from Huntsville to the Sabine. Follow Sabine north until it heads west back into Texas, and follow LA/TX border up to the Texarkana.
Houston and the surrounding metropolitan areas are not East Texas.
Houston and the surrounding metropolitan areas are not East Texas.