The fast-growing technology industry in New York is often cited as a magnet for graduates of the nation’s top universities. But a new report to be discussed in a speech by a deputy mayor on Wednesday found that almost half of the technology jobs in the city are filled by people without college degrees.

The report was commissioned to show just how important the tech sector has become, estimating that it accounts for nearly 300,000 jobs in the city, more than half of them at companies in nontechnology businesses, such as finance and advertising.

Alicia Glen, the city’s deputy mayor for housing and economic development, is expected to highlight that overall finding when she speaks to the Association for a Better New York.

The rising importance of technology companies and the corporate use of technology have been well documented. But less noticed is how broad a range of opportunities technology has created for people seeking work in the city, said Andrew Rasiej, the chairman of NY Tech Meetup, one of the sponsors of the report.