Since its inception in 1974 the The First Financial Federal Credit Union has been serving its members in the WEST COVINA, California 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 Carlton Musmann, the The First Financial FCU has grown its membership to over 31,408 with assets of more than $574,615,797. They have a main office and 10 branch offices.