Business After Hours at Columbia State Bank. Columbia Bank is a Northwest community bank dedicated to their customers, the communities and it's employees. They place the highest priority on customer service and strive to make a positive contribution in each community they serve by employing people who truly make a difference to their customers and communities. This is a networking opportunity for all business owners and members of our community. Come mingle, network and meet new business partners in your community. Hors'd oeuvres and refreshments will be provided by our gracious hosts.