Since its inception in 1930 the Post Office Credit Union has been serving its members in the MADISON, Wisconsin 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 Kevin Yaeger, the Post Office CU has grown its membership to over 3,432 with assets of more than $35,009,631. They have a main office and 1 branch offices.