Since its inception in 1934 the Ace Credit Union has been serving its members in the Mason City, Iowa 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 Ellen Kay, the Ace CU has grown its membership to over 910 with assets of more than $9,528,429. They have a main office and 0 branch offices.