Below are some maps of the black population in the USA, showing concentration centers around the country. The small squares show the breakdown at the county level. If you look at the Southern states, particularly the southeastern states, you see a lot of counties where there is a black majority. But there is no state that has an African American majority overall. The states with the highest proportion of black citizens are:
1) Mississippi - 1,074,200 (37.3% of total population)
2) Louisiana - 1,452,396 (31.98%)
3) Georgia - 3,150,435 (31.4%)
4) Maryland - 1,700,298 (29.44%)
5) South Carolina - 1,290,684 (28.48%)
6) Alabama - 1,251,311 (26.38%)
7) North Carolina - 2,048,628 (21.6%)
8) Delaware - 191,814 (20.95%)
9) Virgina - 1,551,399 (19.91%)
10) Tennessee - 1,055,689 (16.78%)
On this first map the dark blue boxes indicate a proportion of 18.8% or more. That`s quite a wide range.
On this map the darkest squares show 50% or greater black population, which is a little more meaningful than the first map.
On this map the darkest squares show a range of between 50%, and the highest of 85.68%.
When we look at individual cities, the percentages can be quite striking, since in some areas blacks and other races tend to live in separate cities. This is partly due to the phenomena of "white flight", meaning that whites leave the city and move to the suburbs, living a mainly black or minority population in the city. The cities with the highest proportion of African Americans are:
1) Detroit, Michigan - 84.3% black.
2) Jackson, Mississippi - 80.1% black
3) Miami Gardens, Florida - 77.9% black
4) Birmingham, Alabama - 74% black
5) Baltimore, MD - 65.1% black
6) Memphis, Tennessee - 64.1% black
7) New Orleans, Louisiana - 61.2% black
8) Flint, Michigan - 59.5% black
9) Montgomery, Alabama - 57.4% black
10) Savannah, Georgia - 56.7%