According to Fox News [foxnews.com]:
Puerto Rico's governor announced that the U.S. territory has overwhelmingly chosen statehood in a nonbinding referendum Sunday held amid a deep economic crisis that has sparked an exodus of islanders to the U.S. mainland.
Nearly half a million votes were cast for statehood, more than 7,600 for free association/independence and nearly 6,700 for independence, according to preliminary results. The participation rate was just 23 percent with roughly 2.26 million registered voters, leading opponents to question the validity of a vote that several parties had boycotted.
Also covered by AP [apnews.com].