Since its inception in 1958 the Lower Valley Credit Union has been serving its members in the Sunnyside, Washington 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 Suzy Fonseca, the Lower Valley CU has grown its membership to over 14,876 with assets of more than $117,514,735. They have a main office and 4 branch offices.