In a follow-up to their map on most used languages in London, James Cheshire and Ed Manley, along with John Barratt, mapped the most commonly used languages in New York, based on the ones used on Twitter.
English (in grey above) is by far the most popular with Spanish (in blue above) taking the top spot amongst the other language groups. Portuguese and Japanese take third and fourth respectively. Midtown Manhattan and JFK International Airport have, perhaps unsurprisingly, the most linguistically diverse tweets whilst specific languages shine through in places such as Brighton Beach (Russian), the Bronx (Spanish) and towards Newark (Portuguese). You can also spot international clusters on Liberty Island and Ellis Island and if you look carefully the tracks of ferry boats between them.