When Is Halloween 2024 Usa Dates. Halloween 2024, 2025 and 2026. Halloween is an annual observance every 31 october in the united states.

Halloween may fall on the last day of the month, but there are plenty of october holidays, observances, and awareness days to keep you busy in the lead up to october 31. On october 31st, children dress up in costumes and knock on their neighbors’ doors and yell, “trick or treat” when the door.