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Mid-Peninsula Girl Scouts
Serving Girl Scouts & Troops in San Mateo & Foster City
Join or Start a Troop
Join or Start a Troop
Looking to join or start a troop in San Mateo or Foster City? We're here to help!
Current Leaders
Current Leaders
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Get Involved
Join our Mid-Peninsula Service Unit
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Hello SU Team Volunteers!
We’re thrilled to invite you to our 5th annual Fall Kickoff Summit, a FREE weekend full of connection, support, and inspiration! Join Girl Scouts of Northern California at Camp Bothin from August 28–30, 2026 for a weekend of meaningful connections, valuable workshops, and time with fellow service unit volunteers from across our council.
If you can’t join us for the full weekend, Saturday, August 29 is our main day of programming featuring four workshop sessions and the Girl Scout Expo, while Friday evening and Sunday morning will include additional opportunities to connect, learn, and have fun!
Ready to join us? Click this link to register:
Aug 15-16 - Space Cookies (GS Troop Robotics Team) info session for rising freshman and sophomores
Aug 21 - Songs & Smores
Aug 26 - Volunteer Support Meeting
Aug 28-30, 2026 - SU Volunteer Fall Kickoff Summit (Adults Only)
Sep TBD - SU Volunteer Meeting
Nov 13-15 - Fall Camporee
Mid Peninsula Service Unit 389 serves Girl Scout Troops in San Mateo and Foster City, California. The Service Unit acts as a liaison to to the Girl Scouts of Northern California Council. We also organize events providing opportunities for girls to participate in the outdoors, community service, product sales, and other Girl Scout fun and traditions. This website is independently created and maintained by volunteers, and is NOT an official website of Girl Scouts of Northern California, nor of Girl Scouts of the USA.
Honor Troop is a Girl Scout tradition practiced by Councils across the country to recognize troops that have gone above and beyond through the Girl Scout Year. It’s a prestigious award that the youth achieve together, and it ensures that troops are getting a well-rounded Girl Scout experience.
Activities
Activities
Our volunteer-run Service Unit participates in activities run by the Girl Scouts of Northern California Council and hosts fun events, often including the following:
Outdoors - Camping, Fall Camporee, Spring Camporee.
Traditions - Girls participate in many traditions established by over 100 years of Girl Scouting, learning new skills, making new friends, and taking action to make the world a better place.
Community Service - We offer service projects to give back to the community.
Badges - Girls can learn new skills and earn badges outlined in the Girl Scout program of the Girl Scouts of the USA.
Product Sales - Girls participate in the famous Girl Scout Cookie Program and Fall Product Program learning business skills in the process.
Trips - Troops participate in trips organized by individual troops, Mid Peninsula Service Unit, and Girl Scouts of Northern California Council.
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