The “Delmar Divide” refers to Delmar Boulevard in St. Louis. It is a street which runs east/west and to a large extent separates the racial make-up of the city. In a sample of households north and south of Delmar, residents south of Delmar Boulevard are 73% white, while residents north of Delmar are 98% African American, as the BBC pointed out in, “Crossing a St. Louis street that divides communities,” last year.