The non-partisan think tank says that's more than the city had five to 10 years ago.
It says some parts of the city, particularly Manhattan, are "oversaturated" by chains.
Dunkin' Donuts topped the study's list with 341 stores. Subway sandwich shops ranked second with 335 restaurants, followed by McDonald's, Starbucks, and Duane Reade.
Manhattan has the most chains: 2,352. Manhattan's most popular?
Starbucks, with 186 stores.
Critics have complained big retailers are forcing mom-and-pop stores out and stripping neighborhoods of their unique character.
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