Oregon Revised Statutes Cities § 222.183

(1) If the effective date of an annexation is more than one year after the date of a proclamation of annexation, the city, through its recorder or other city officer or agency performing the duties of recorder under this section, shall send notice to the county clerk of each county within which the city is located. The notice shall be sent not sooner than 120 days and not later than 90 days prior to the effective date of the annexation.

(2) The notice described in subsection (1) of this section shall be in addition to any other notice or filing required under ORS 222.010 to 222.750.