The number of superior court judges in each county is set by statute.  Any change in the number of full and part-time judges in a county's superior court is determined by the Legislature after receiving a recommendation from the Board for Judicial Administration (BJA).  The BJA recommendation is based on an objective workload analysis developed annually by the Administrative Office of the Courts.  The objective workload analysis takes into account available judicial resources and the caseload activity of the court.

Superior court judges and court commissioners hear felony and other criminal matters, civil matters, domestic relations matters, guardianship and probate matters, juvenile matters as well as child dependency cases, appeals from lower courts, and appeals from state administrative agencies.  The Washington State Constitution provides that the state and county share the cost for superior court judges.  A superior court judge's benefits and one-half of the salary are paid by the state.  The county pays one-half of the judge's salary.  For an additional judicial position to become effective, the legislative authority of the affected county must approve the position and agree to pay, out of county funds and without reimbursement from the state, expenses associated with the new position. 

Thurston County has eight superior court judges.

An additional judicial position is created for Thurston County, changing the number of superior court judges from eight to nine.  The additional judicial position is effective only if the Thurston County legislative authority documents its approval of the position and agrees to pay for the expenses of the additional position without compensation from the state.  The position would then be created on November 1, 2021.