What is the credit union routing number? 271188081 routing number is a 9-digit number designed and assigned to Credit Union One by The American Bankers Association (ABA) to identify the financial institution upon which a payment was drawn. Credit Union One routing numbers are also known as as "ABA numbers", "routing transit numbers" (RTN), or "check routing numbers".What are good credit unions? Advantages of Joining a Credit Union. Credit unions are an especially good option for people who are building credit for the first time or trying to re-establish good credit, as they are typically smaller organizations which offer personalized service and are more willing to consider factors beyond the "black and white.".What is 5 star credit union? 261272046 routing number is a 9-digit number designed and assigned to Five Star Credit Union by The American Bankers Association (ABA) to identify the financial institution upon which a payment was drawn.What is community service credit union? Community Service Credit Union has been open since 1954. The credit union has assets totaling $100.63 Million and provides banking services to more than 11,000 members. Membership: The credit union is a member-owned financial cooperative providing banking services including savings, loans, and other financial services to members.