On July 29, 2015, NY State of Health released demographic enrollment data on the more than 2.1 million New Yorkers who enrolled in a health plan through the Marketplace through February 28, 2015, the end of the open enrollment period. The data show that enrollment through the Marketplace increased more than two-fold, more than 89 percent of enrollees reported being uninsured at the time of application, enrollment occurred in every county in the state and across all health plans, and across a mix of age groups. As of February 28, 2015, 2,143,413 New Yorkers enrolled into a health plan through NY State of Health. The report is attached below.
Zip code level enrollment data is available here.