New York City’s budding technology industry is growing rapidly by attracting investors and engineering talent despite spotty access to a reliable broadband network, according to a study released on Wednesday.

The study, “New Tech City,” conducted by the Center for an Urban Future, concluded that the technology industry is growing faster in New York City than anywhere else in America and that the city now trails only Silicon Valley as a hub for the development of new technology companies. The study’s authors, Jonathan Bowles and David Giles, identified 486 technology companies that had been founded in the city since 2007 and determined that the financial crisis and the recession that followed did not slow the industry’s growth.

Mr. Bowles said the technology investors he interviewed agreed that in the last few years, New York had eclipsed the Boston area as the second-leading breeding ground for tech companies in the country. Silicon Valley, around San Jose, Calif., is still by far the dominant center of the industry, but New York was the only place where the number of deals to finance tech start-ups rose between 2007 and 2011, Mr. Bowles said.

The number of venture capital deals in New York rose by 32 percent in that period, while it fell by more than 10 percent across the nation, the report said.