Overview
Aftershock Festival is a multi-day rock, metal, and punk festival held annually at Discovery Park in Sacramento, produced by Danny Wimmer Presents (DWP). Founded as a single-day event in September 2012 with roughly 11,000 attendees, it has grown into the largest rock festival on the West Coast — drawing a record 164,000+ fans across four days in 2025, generating an estimated $35 million in local economic impact, and booking 115+ bands across multiple stages. It is now the single biggest annual music event in Sacramento by a wide margin, inheriting the economic-anchor role the Jazz Jubilee once held. [1][2][3]
Founding and early years (2012–2018)
The inaugural Aftershock took place September 23, 2012, as a one-day festival with Stone Temple Pilots, Deftones, and Bush as headliners. It drew approximately 11,000 attendees. [1][4]
DWP expanded the event incrementally: from one day to two, then to three days in 2019. Through the 2010s Aftershock grew steadily as DWP's West Coast flagship, competing with established California festivals (Ozzfest, Knotfest) while building a dedicated Sacramento audience. The Deftones — Sacramento's own — have been recurring headliners, closing the circle between the city's local scene and its largest event. [1]
COVID and four-day expansion (2020–2022)
2020 was canceled due to the pandemic — the festival's first miss in eight years. It returned in 2021 as a four-day festival (October 7–10), immediately pushing attendance and booking capacity to a new tier. By 2022, attendance reached approximately 160,000 across the four days. [1][2]
Current scale (2023–2026)
- 2023: ~160,000 attendance, continued four-day format.
- 2024: ~160,000 attendance, introduction of a fifth stage allowing 30+ additional bands on the lineup. Estimated $30 million local economic impact. [2][5]
- 2025: Record-breaking 164,000+ attendance, 115+ bands on four stages. Estimated $35 million local economic impact, including nearly 12,000 hotel-room and short-term-rental bookings. Headliners included Blink-182, Deftones, Korn, and Bring Me the Horizon. Sacramento Mayor Kevin McCarty, Senator Angelique Ashby, and Assemblymember Maggy Krell formally honored DWP for its cultural and economic contributions. [3][6]
- 2026: Announced lineup includes Tool and My Chemical Romance. Scheduled for October 1–4, 2026 at Discovery Park. Community partners include Visit Sacramento, County of Sacramento, City of Sacramento, and Cal Expo. [7][8]
Economic impact
Aftershock's economic significance to Sacramento is difficult to overstate. The $35 million local impact reported for 2025 — up from $30 million in 2024 — makes it one of the largest single-weekend economic drivers in the region. Fans attend from all 50 states and more than 30 countries. The festival's growth has been a material factor in Sacramento's hotel and restaurant infrastructure around Discovery Park. [3][6]
For context: the Jazz Jubilee at its peak in the 1980s was Sacramento's largest annual music event by similar economic metrics. Aftershock now fills that role at substantially greater scale.
Key people / entities
- Danny Wimmer Presents (DWP) — producer since founding (2012). Also produces Welcome to Rockville, Louder Than Life, Sonic Temple, and other major festivals nationally. [1]
- Visit Sacramento — community partner and tourism-side collaborator. [5]
- Discovery Park — venue site (confluence of the American and Sacramento Rivers). [1]
Why it matters for Sacramento music
Aftershock did something no Sacramento event had done since the Jazz Jubilee's peak: it made Sacramento a destination city for a national music audience. 164,000 people coming to Sacramento for a single weekend is a scale that changes how the city thinks about itself as a music market — it affects venue investment, hotel development, and the pipeline of touring acts who now include Sacramento on their routing because they know the audience is there. Whether that scale benefits the local scene (smaller bands, independent venues, the Sacramento artist ecosystem) or just DWP's national touring circuit is an open and actively debated question.
Sources
- Aftershock Festival, Wikipedia. https://en.wikipedia.org/wiki/Aftershock_Festival
- Aftershock 2023: A Resounding Success in Sacramento, IPS Nationwide. https://ipsnationwide.com/aftershock-2023-a-resounding-success-in-sacramento/
- Aftershock Festival Draws Record-Breaking Attendance With Over 164K, Boosting Sacramento Economy, Pollstar, October 10, 2025. https://news.pollstar.com/2025/10/10/aftershock-festival-draws-record-breaking-attendance-with-over-164k-boosting-sacramento-economy/
- Aftershock Festival, Sacramento365. https://sacramento365.com/event/aftershock-festival/
- Sacramento's Aftershock Announces 2024 Lineup, Visit Sacramento. https://www.visitsacramento.com/blog/stories/post/aftershock-lineup-2024-sacramento/
- Sacramento businesses eager to welcome thousands of Aftershock Festival fans, ABC10. https://www.abc10.com/article/news/local/sacramento/businesses-eager-aftershock-festival-fans/103-d7968648-1064-47a8-aa4a-97f04756f2bc
- Metal, rock, and punk festival Aftershock 2026 lineup announced, CapRadio, March 4, 2026. https://www.capradio.org/articles/2026/03/04/metal-rock-and-punk-festival-aftershock-2026-lineup-announced/
- Aftershock Festival 2026 returns to Sacramento with over 140 artists, ABC10. https://www.abc10.com/article/news/local/sacramento/aftershock-festival-2026-returns-to-sacramento/103-00e9635a-46e8-4146-b972-ee4edd6626dd