SDCL § 11-2-32: Municipal planning and zoning powers unimpaired--Area of joint zoning authority.

Nothing in this chapter may be construed to prevent or modify the powers of an incorporated municipality, with a duly authorized planning commission, from exercising planning and zoning jurisdiction within the corporate limits and from exercising jointly with the county planning commission the planning and zoning authority within a joint jurisdictional area beyond the municipal corporate limits, as provided in chapters 11-4 and 11-6.