The American country with the highest percentage of Black population is Haiti, at about 90%. The Dominican Republic, Cuba, and Jamaica are also high, but Haiti is generally the highest among the Americas.

Why this is the answer

The question is about the highest share of population , not the largest number of Black people overall. In that case, Caribbean countries usually rank above larger countries like the United States or Brazil because their total populations are smaller and their Black populations make up a larger proportion.

Quick context

  • Haiti : about 90% Black.
  • Jamaica : roughly 85%+ Black.
  • United States : about 13.5% Black.

Note on wording

If you meant “American country” as in countries in the Americas , Haiti is the clearest answer. If you meant the United States only , then Mississippi has one of the highest Black population shares among states, but that is a different question.