Founded in 1941, GCS Credit Union has always focused on our members. Over the past 70 years, we’ve grown from a single office in Granite City to a full service financial institution. GCS is big enough to offer convenience, but small enough to offer customized financial services to meet your ever-changing needs. We are not pushy and profit drive – we look out for your best interests. It’s what makes banking with a credit union so satisfying.