Here’s the latest I can provide based on available public reporting up to now.
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Six Flags Great America in Gurnee (Illinois) is actively operating in 2026 and marking its 50th anniversary season with planned celebrations and new features for the year. The park opened in 1976 and is undergoing a milestone year of activities, including a dedicated anniversary period.[3]
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There have been broader discussions about Six Flags’ portfolio in recent years, with reports in 2025 noting the company’s reviews of certain parks and the possibility of closures for some locations tied to margins and strategic fit. However, as of late 2025 and into 2026, Six Flags Great America in Illinois remained open, while Six Flags America in Maryland was announced to close after its 2025 season, and California’s Great America was mentioned in the context of potential future considerations.[1][2][4]
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For developments specifically about Great America in California (Santa Clara) or other sites, the latest public coverage indicated planned closings or lease-related considerations at those locations, but these are separate parks from Six Flags Great America in Illinois. If you’re tracking closures, it’s helpful to follow official Six Flags investor communications for the most current status.[4][1]
If you’d like, I can pull in more recent reports or assemble a quick timeline of park openings/announcements for Six Flags Great America and related parks, plus a map of which locations are currently operating versus closed, with sources. Would you like me to do that?
Citations:
- Six Flags Great America open status and anniversary plans (Illinois).[3]
- Broader portfolio reviews and closures for related parks (Maryland, California).[2][1][4]