Section 201.150 - Jackson County The boundary of Jackson County is as follows:
(1) Beginning at the southwest corner of Umpqua County; thence running due east to the northwest corner of Douglas County; thence southerly along the western boundary line of Douglas County to the southwest corner of such county; thence easterly along the southern boundary of Douglas County to the southeast corner thereof; thence in a southeast direction to the eastern extremity of Rogue River Valley; thence due south to the boundary line between Oregon and California; thence due west along such boundary line to the Pacific coast; thence northerly along the coast to the point of beginning.(2) Beginning at the southeast corner of Douglas County; thence running due east to the one hundred and twentieth meridian of west longitude; thence due south along the boundary line between Grant and Wasco Counties to the forty-second parallel of north latitude; thence west along the forty-second parallel to the southeast corner of Jackson County; thence to the place of beginning. For description of areas, parts of which were once encompassed by the area described in 201.150 but that now form parts of Coos, Curry and Josephine Counties, see, respectively, 201.060, 201.080 and 201.170. The eastern boundary of Jackson County is part of the western boundary of Klamath County (see 201.180). The northern boundary of Jackson County is part of the southern boundary of Douglas County (see 201.100). The western boundary of Jackson County is the eastern boundary of Josephine County (see 201.170). The southern boundary of Jackson County is the Oregon-California line.
Umpqua County, referred to in 201.150 (1), was incorporated in Douglas County in 1863.