Yep! But you aren't seeing African immigration to the same degree in the rest of the US, let alone compared to what you see in much of Western Europe like the UK or France.
Also, much of the African immigrant community you see in NYC is primarily Senegalese in origin (there's a reason why 116th St in Harlem is Petit Sénégal), and most Senegalese immigrate to France.
There are only around 20k Senegalese Americans (most of whom live in the NYC area) versus 300k French Senegalese. And that's just Senegal alone.
Even then, on a per capita basis, the UK is the primary destination for Nigerians (especially for education), not the US - and that community is much more established than the comparable community in the US.
NYC is not representative of the US, and you don't see the same degree of immigration of Africans in the US aside from isolate communities such as Somalis in Minnesota, Tigrayans in the DMV, or Igbos in tech hubs and TX.
According to https://en.wikipedia.org/wiki/Nigerians there are more Nigerians in the US than UK. That's purely a count rather than a percent of the population of course. But I certainly agree that the US has immigrant communities generally in big cities and not everywhere. Has always been that way
Also, much of the African immigrant community you see in NYC is primarily Senegalese in origin (there's a reason why 116th St in Harlem is Petit Sénégal), and most Senegalese immigrate to France.
There are only around 20k Senegalese Americans (most of whom live in the NYC area) versus 300k French Senegalese. And that's just Senegal alone.