New York City is one of the most culturally diverse cities in the world, and I'll bet that the diversity in New York is evident in New York's tech scene.
Many cities like to claim this, but NY barely makes the top 10. For example, Dubai has way over 75% foreign residents. And cities like Toronto and Sydney are both statistically and anecdotally more culturally diverse.
I'd be more interested in the number of fashion/wedding startups in NY and the percentage of females who run said startups. Huge stereotype and completely unfounded, but it wouldn't surprise me either.