The best federal credit union in Katy, Wellby Financial, has provided free checking accounts, high-yield saving options, competitive loan rates, and affordable mortgage financing to help people prosper. Wellby was originally established in 1961 to serve the employees and families of Johnson Space Center. We have grown into one of the largest credit unions in Houston, serving more than 132,000 members with 22 branch locations and more than $2 billion in assets. As a people-first not-for-profit organization, Wellby is open to all who live, work, worship, or attend school in the Greater Houston Metro or Galveston area. Federally insured by NCUA. Equal Housing Lender. Equal Opportunity Employer.