The incident occurred around 4 p.m. when the Metropolitan Police Department's bomb squad was dispatched to the White House to examine the package.
The MPD said no hazardous materials were found in the package.
Lafayette Park, which is across the street from the White House, was also searched by the Secret Service before giving the all clear.
President Barack Obama was not in the White House at the time of the incident; he was in Delaware on Thursday afternoon for an economic visit. Vice President Joe Biden was also out of town attending a conference in Detroit.