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Halloween Costume Parties in Los Angeles (2026)
These Los Angeles parties put the costume front and center — several run contests on the night. Here are 8 worth knowing about.
1. IT's A Costume Party
Going down Saturday, October 17 at Orange County.
Saturday, October 17 · Orange County — See details & tickets →
2. HOTTIEWEEN All Girl Halloween Costume Party
A Halloween-week fixture on the Los Angeles calendar — doors open October 31 at Prospect Park DTLA.
Saturday, October 31 · Prospect Park DTLA — See details & tickets →
3. THE 1ST PURGE COSTUME PARTY
Going down Friday, October 9.
Friday, October 9 — See details & tickets →
4. Planet Rave: A Queer Halloween Party
Halloween is coming early this year!
Saturday, October 17 · 698 Harlem Pl — See details & tickets →
5. Altered Halloween
Altered Halloween Two rooms of electronic music, vendors, drinks & more.
Friday, October 23 — See details & tickets →
6. Monica’s SURPRISE 60th Costume Birthday Party
A Halloween-week fixture on the Los Angeles calendar — doors open October 17 at 8443 Haven Ave.
Saturday, October 17 · 8443 Haven Ave — See details & tickets →
7. Ucla Halloween Costume Party 18+ in The Valley
A Halloween-week fixture on the Los Angeles calendar — doors open October 31 at Westwood.
Saturday, October 31 · Westwood — See details & tickets →
8. CSUN Halloween Costume Party 18+
HalloWeekend 2026 by CSUN Host DJ SMOKE ONE.
Saturday, October 31 · 15832 Stagg St — See details & tickets →
Every Halloween event, one place
New Halloween events go live on Posh every day — Los Angeles and every other city. The full, always-current lineup lives on the Halloween collection.
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