The Master List is a combination of eligible Spokane County residents ages 18 and over from the driver's license list, voter registration list, and State Identicard holder's list. The law affecting eligible jurors in Washington State was changed in 1994 to include all three lists. Spokane County's eligible resident population is presently estimated at 314,000. Jury service is discussed in the Revised Code of Washington (RCW) 2.36. Summons are mailed under the authority of the Spokane County Clerk.