The field of membership of Associated Credit Union of Texas is limited to the following persons, including incorporated and unincorporated organizations, who have the following definable community of interest:
- Persons who live, work, worship or attend school in and other legal entities in the Texas counties of Austin, Brazoria, Brazos, Burleson, Chambers, Fayette, Fort Bend, Galveston, Grimes, Hardin, Harris, Jefferson, Lee, Liberty, Matagorda, Montgomery, Polk, San Jacinto, Waller, Washington, and Wharton; and members of the family of such persons. "Members of the family" includes any person that is related to a member or a potential member by blood or marriage (including foster, adopted and step family members);
- Employees of Occidental Chemical Corporation, Harris County and Dallas County, Texas; employees of The Geon Company (formally B.F. Goodrich Chemical Group), Harris County, Texas; employees of ISK BioSciences (formally Fermenta Plant Protection), Harris County, Texas; employees of Fina Oil and Chemical (formally Cosden Petro Fina), Harris County, Texas; employees of Mundy Contract Maintenance, Inc., Harris County, Texas; employees of Pearland Independent School District, employees of the city of Pearland; employees of Flexitallic L.P.; employees of; Texas Petrochemical LP (formally Texas Petrochemicals Corporation and Texas Olefins Incorporated), and employees of; Bayer, Inc., and employees of; Grayson Armature Works, Incorporated, and employees of; G.F. Lasswell Brush Company, and employees of; members and their employees of the Houston Aviation Alliance (HAA) (formerly Houston Aviation Advisory Council), Houston, Texas;
- Persons who are receiving retirement, pension, or other benefits as a result of prior employment by any business or organization included within this field of membership;
- Spouses of persons who died while within the field of membership of Associated Credit Union of Texas;
- The field of membership also includes employees of Associated Credit Union of Texas and members of their families.