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