Join Today! There are a limited number of business memberships available. If you have a business located in Highlands Ranch you may apply for a Business Membership which will allow you and your employees membership to the four recreation centers. Companies with their principal place of business located within the HR area (address must be in zip codes 80126, 80129, and 80130) served by the HRCA are eligible to apply for one or more Business Memberships for their employees. Single employee and employee family recreation memberships are offered with full privileges at our four first-class recreation centers. Payment of a yearly Business Membership Fee is required.