Oregon Revised Statutes Cities § 221.315

(1) Prosecution of violations of the charter or ordinances of a city in circuit or justice court shall be by the city attorney and in the name of such city. An agreement may be made between any city and, on behalf of the state, the presiding judge for the judicial district in which all or part of such city is located, that such violations be prosecuted for such city in the circuit court by the district attorney in the name of the State of Oregon. An agreement may be made, pursuant to ORS 190.010, between any city and the county in which all or part of such city is located, that such violations be prosecuted for such city in the justice court by the district attorney in the name of the State of Oregon.

(2) Except as otherwise provided by an agreement made under subsection (1) of this section in respect to the court, all fines collected by the circuit or justice court having jurisdiction of a violation of a city charter or ordinance shall be paid as follows:

(3) If the full amount of the fine imposed by a circuit court under this section is collected and a surcharge is imposed on the fine under section 1 of this 2016 Act, the last $5 of the amount collected shall be paid to the county for deposit in the county's courthouse surcharge account established under section 2 of this 2016 Act. If the full amount of the fine imposed is not collected, the $5 payment required by this subsection shall be reduced by one dollar for every dollar of the fine that is not collected.