Is Physical Therapy or Occupational Therapy in higher demand?

They're both very important fields and are equally needed. Physical therapy deals with rehabilitation of bones, joints, and muscles and gross motor skills. Occupational therapy deals more with the thought processes and coordination of fine motor skills. A stroke victim that has experienced loss of brain function and paralysis might require both physical and occupational therapy as an example. We also live in a fairly active society, one where sports injuries and accidents are common. Unfortunately, or rather fortunately for you if you're thinking of this as a career path, both types of therapists will be needed for many years to come.