ZooMontana coupons and discounts provide several different savings options for visitors. This includes special discounts reserved for military personnel, as well as children and seniors 55 and over. The zoo offers free parking all year, as well as special Family Day discounts, promoted through the zoo’s Facebook page. The biggest way to save is by purchasing an annual membership to the zoo. Members receive unlimited access to the zoo for a year, as well as percentages off savings at the zoo store, $5 off membership renewal, and discounts and deals for zoo programs.