Welcome to Mercer Island Girl Scouts (Service Unit 430)
We are one of the many Service Units that make up Girl Scouts of Western Washington (GSWW.) We have nearly 25 troops with over 200 registered girls and volunteers. Troop levels range from K to 12th grade.

We are looking to form a new Kindergarten Troop 44358 this Fall (Sept 2025).  If you are interested in supporting the troop as an Assistant Troop Leader or have a soon-to-be kindergartner who is interested, visit here

​Join us to discover the fun, friendship, and power of girls together.

NEWS

• Discover youth and volunteer opportunities at the free GSWW Sprouting Success event: Saturday, May 3rd, 11:30am-12:30pm at the Mercer Island Library.  Learn more about Girl Scouts and create Empowerment Petals for your own Success Flowers!  Learn more & register here
• Registration is now open for the South Bellevue Mercer Island (SBMI) Summer Camp: July 14-18, 2025. Visit here for more information and to register.  
• Thank you for joining us at the 2025 Spring Encamporee, April 4-6 at Camp River Ranch!