Mexico City is not meaningfully described by a single “Black percentage” in the way U.S. cities are, and the most relevant national figure for Mexico is that Afro-Mexicans were about 1.2% of the population in a reported census estimate.

If you meant Mexico City, Mexico , the city’s Black/Afro-descendant share is generally understood to be very small compared with the broader Mexican population, but I don’t have a reliable city-specific figure from the information available here.

If you meant Mexico City, Missouri , the Black population is 6.7%.