According to a Facebook post from the family, the man was last seen in person on Jan. 13.
Provincial police Sgt. Benoît Richard said Gary Forster was last heard from on Jan. 15 after he called his wife who was spending time with one of the couple's daughters in Montreal.
Family members believe he left his home on Jan. 15 to run errands.
"We recently found his car this morning in Montreal," said Richard. "It was near the Atwater Market where it had been towed from Workman Street, which is very nearby."
He said Forster's car was ticketed on Jan. 18 and was covered in snow. Richard said the car had been there for several days.
He said the missing man has not used his bank cards since he disappeared.
Forster is five-foot-eight-inches tall, has blue-green eyes and brown hair.
Richard said his family and police are worried about his safety. They are asking anyone with more information to call police.