Police recovered the drugs, money and a gun during a search of the couple's home and storage unit.
They're suspected of running parallel methamphetamine and fentanyl distribution conspiracies in northern Minnesota.
The CEE-VI Drug and Gang Task Force arrested the two on Wednesday.
It was found during a traffic stop on I-35.
The 47-year-old is a St. Paul resident.
A 22-year-old Minneapolis man was among three arrested.
He made the comment during a Crow Wing County board meeting.