Children's Halloween Costume Swap at SF Main Library
Find a new Halloween look for a child or bring a clean, gently used costume to swap. Props and accessories are welcome too.
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San Francisco Main Library atrium, archival photograph from 2013. This shows the host building, not a listed 2026 event or its specific room.
Details to plan before you go
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For children and their caregivers, in the Main Library's second-floor Children's Creative Center. This is not the Marina Branch or San Leandro costume swap.
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No registration is required under the official attendance rules. Bring clean, gently used costumes, accessories, or props if you wish.
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The official page does not publish one-for-one, size, or per-person quantity rules. Available costume choices depend on what is on site.
Venue · SF Main Library · Children's Creative Center, 2nd Floor · 100 Larkin Street, San Francisco, CA 94102
For · Children and caregivers / Swaps and reuse