Oregon Revised Statutes Property Rights and Transactions § 92.042

(1) Land within six miles outside of the corporate limits of a city is under the jurisdiction of the city for the purpose of giving approval of plans, maps and plats of subdivisions and partitions under ORS 92.040 and 227.110. However, unless otherwise provided in an urban growth area management agreement jointly adopted by a city and county to establish procedures for regulating land use outside the city limits and within an urban growth boundary acknowledged under ORS 197.251, when the governing body of a county has adopted ordinances or regulations for subdivision and partition control as required by ORS 92.044, land in the county within the six-mile limit shall be under the jurisdiction of the county for those purposes.

(2) Land over six miles from the corporate limits of a city is under the jurisdiction of the county for the purpose of giving approval of plans, maps and plats for subdivisions and partitions under ORS 92.040.