The United Cerebral Palsy (UCP) Foundation estimates that nearly 800,000 children and adults in the United States are living with one or more of the symptoms of cerebral palsy. According to the federal government's Centers for Disease Control and Prevention, each year about 10,000 babies born in the United States develop cerebral palsy.
Despite advances in preventing and treating certain causes of cerebral palsy, the percentage of babies who develop the condition has remained the same over the past 30 years. Improved care in neonatal intensive-care units has resulted in a higher survival rate for babies with very low birth weight. Many of these infants have developmental defects in their nervous system or suffer brain damage that cause the characteristic symptoms of cerebral palsy.
This answer is based on source information frm National Institute of Neurological Disorders and Stroke.