The land within Pitkin County is divided into those zone districts specified in Secs. 3-40 through 3-70 below. Sec. 3-40 identifies those zone districts intended for use outside the urban growth boundaries (and Redstone), and Secs. 3-50 through 3-60 identify zone districts intended for use inside the boundaries (and Redstone). Sec. 3-70 identifies special purpose zone districts available for use both inside and outside the urban growth boundaries.