The Metropolitan Kansas City Interstate Air Quality Control Region (Missouri-Kansas) consists of the territorial area encompassed by the boundaries of the following jurisdictions or described area (including the territorial area of all municipalities (as defined in section 302(f) of the Clean Air Act, 42 U.S.C. 1857h(f) geographically located within the outermost boundaries of the area so delimited):
In the State of Missouri: Buchanan County, Cass County, Clay County, Jackson County, Platte County, Ray County.
In the State of Kansas: Johnson County, Leavenworth County, Wyandotte County.