How do you lose weight off your stomach if you are over the age of sixty?

Short of Liposuction, there's no way to target weight loss. You have to settle for the old fashioned approach of eating healthier/less, exercising more and lose a little weight from all over.

At 60, your base metabolic rate is lower than what it is for a younger person, so it'll take you longer, or a stricter diet to lose the weight.