Or. Rev. Stat. § 803.525
The Department of Transportation shall issue two registration plates for every vehicle that is registered by the department except as otherwise provided in this section or ORS 803.530. Upon renewal or when otherwise provided under ORS 803.555, the department may issue stickers in lieu of or in addition to registration plates. The following shall be issued plates as described:
[1983 c.338 §258; 1985 c.668 §12; 1989 c.43 §27; 1991 c.407 §28; 1993 c.741 §119a; 2001 c.25 §1; 2003 c.655 §114; 2021 c.630 §127]