Trick-or-treating typically ends around 8:00–9:00 p.m. local time, with many communities aiming for a 9:00 p.m. cutoff for older kids and a shorter window (often 5:30–8:00 p.m.) for younger children. Some areas may allow slightly later hours, especially on Halloween when sunset is earlier or later, or when there are event-specific guidelines. If you’re hosting, turning off exterior lights or placing a “We’re out of candy” sign signals the end. Key factors to consider

• Local guidelines vary: many neighborhoods standardize end times, but towns or counties may publish earlier or later windows.
• Day-of conditions: later sunset or weekend alignment can shift typical start/end times, particularly when Halloween falls on a Friday or weekend, potentially extending activities into early evening.
• Safety and courtesy: for families with younger children, ending by 8:00 p.m. is common; for communities with high activity, 9:00 p.m. is a widely accepted latest end time.

If you want a precise end time for a specific location, I can look up recent local recommendations or events and give you the exact window used in that area.