Howellville or Howell is an unincorporated community in Harris County, Texas, United States, which has been absorbed by Greater Houston. The site is located at the intersection of Alief Clodine Road and Sugar Land Howell Road on the west side of Houston, approximately halfway between the original settlements of Clodine and Alief. There are no road signs identifying the place. The community began as a stop on a railroad line that no longer exists.