Burglaries of businesses have risen in New York City under emergency measures to fight the new coronavirus, according to new New York Police Department data, and some businesses are boarding up their storefronts.

The NYPD has seen a 75% increase in reports of burglaries of commercial establishments from March 12, when New York City Mayor Bill de Blasio declared a state of emergency, to March 31, police officials said. The NYPD recorded 254 burglaries of businesses during that time period this year compared with 145 for the...