What anniversary follows the United States Semiquincentennial in 2076?

The anniversary that follows the United States Semiquincentennial in 2076 is the United States Tricentennial.

A tricentennial marks 300 years. Since the anniversary commemorated in 2026 traces back to 1776, adding another 50 years leads to 2076, exactly three centuries after the Declaration of Independence. The 2076 observance is therefore expected to be the next major national anniversary after America250.

The word tricentennial comes from tri-, meaning three, and centennial, meaning a hundred-year anniversary. It is distinct from quadricentennial, which would mark 400 years, and quincentennial, which would mark 500 years.

The sequence of labels can be useful for remembering U.S. anniversary history: the 1976 Bicentennial marked 200 years, the 2026 Semiquincentennial marks 250 years, and the anticipated 2076 Tricentennial will mark 300 years.