Security Credit Union Address: 1400 E M 21, Owosso, MI 48867 Phone: (800) 373-2333 Loans, Credit Unions Other Businesses: Advance America at 1359 E. Main St., Owosso, MI 48867 Check 'n Go at 1681 E M 21, Owosso, MI 48867 Edward Jones - Financial Advisor: Dave Minarik at 2246 E M 21, Owosso, MI 48867-9069 Edward Jones - Financial Advisor: Cara L Keay at 720 S Washington St Ste 2, Owosso, MI 48867-3551