Winnetka Heights is one of the oldest and largest historical districts in the Oak Cliff section of Dallas, Texas (USA). The district is bounded by Davis Street (20px SH 180) on the north, 12th Street on the south, Willomet Avenue on the east and Rosemont Avenue on the west. Established in 1910, Winnetka Heights consists of early 20th century wood frame houses (two-story 4-square and single story prairie style homes predominate).