"They have, I can confirm," the court official said when asked whether the jury had reached a verdict.
The 54-year-old US president's son faces up to 25 years in prison if convicted on the three charges against him, which include lying on a firearm purchase form and possessing a firearm as a drug user.
US President Joe Biden has said that he will respect the outcome of the trial and will not pardon his son if he is convicted.