The quake struck Tuesday morning at 7:06 a.m. local time, sending some residents rushing into the streets.
Police said eight people, including children, suffered head or foot injuries after being hit by falling objects.
One abandoned three-story building collapsed as the city was jolted during the morning rush hour.
“I was having breakfast with my wife when everything started to shake. The TV set and glasses fell off the table,” Masbate City Mayor Socrates Tuason told the Associated Press
“When I got out, I saw all the people in the community were on the streets.”
The mayor said disaster-response teams had been dispatched across the city.
Tuesday’s quake came only a month after 58 people died in a temblor on the nearby island of Negros.