ince its inception in 1972 the Opc Federal Credit Union has been serving its members in the Durkee, Oregon area with exceptional financial products. You can find their current interest rates on used car loans, new car loans, 1st mortgage loans and interest rates on both fixed and adjustable mortgages here on these pages. Currently led by Donald Garrison, the Opc FCU has grown its membership to over 341 with assets of more than $2,640,674. They have a main office and 1 branch offices.