Traffic delineators may be surface mounted on either level or sloped surfaces. A delineator mounting system adapted for the surface-mounting of a delineator includes a base having a generally-planar bottom surface, a cavity in the base, a top surface, and walls forming an aperture through the top surface to the cavity. A coupling has legs, with at least one leg being interfitted with the cavity of the base, and at least one other leg extending through the aperture of the base. A delineator is fastened to the leg of the coupling extending through the aperture of the base.