ORS 36.464: Venue.

(1) The functions referred to in ORS 36.468 and 36.470 shall be performed by the circuit court in:

      (a) The county where the arbitration agreement is to be performed or was made.

      (b) If the arbitration agreement does not specify a county where the agreement is to be performed and the agreement was not made in any county in the State of Oregon, the county where any party to the court proceeding resides or has a place of business.

      (c) In any case not covered by paragraph (a) or (b) of this subsection, in any county in the State of Oregon.

      (2) All other functions assigned by ORS 36.450 to 36.558 to the circuit court shall be performed by the circuit court of the county in which the place of arbitration is located.