Bellco Credit Union is proud to serve Castle Rock, CO. We’re a Colorado-based, not-for-profit, financial cooperative offering a full complement of banking products and services including checking accounts, auto loans, credit cards, business services & more. Since 1936, we have been committed to helping our members’ secure their financial future and actively supporting our communities by contributing resources to organizations across Colorado. Bellco – Banking for Everyone. Federally Insured by NCUA. Equal Housing Opportunity.