The City of Newcastle uses the Mercer Island Municipal Court to provide court services. The court is located on Mercer Island and is open to the public Monday through Thursday, 9:00 am to 12:00 pm and 2:00 pm to 3:30 pm. The court is closed weekdays 12:00 pm to 2:00 pm, Friday's and holidays. To find out more information about traffic tickets, orders for protection, criminal cases, warrants and other information you can visit the Mercer Island Municipal Court website.

Mercer Island District Court
9611 SE 36 Street
Mercer Island, WA 98040
phone: 206.236.3451

For information on small claims, name change, passport application, you can visit the King County District Court website at www.kingcounty.gov for further information.