Emergency teams say the woman hurt her back.
Authorities have issued a warning about dangerous rip currents.
"We responded to Glencoe Beach (Monday) for a report of a person in distress. When we arrived there, they had the person out of the water. We placed them in our ambulance and began advanced life support care and transported her to Evanston Hospital," said Lt. Lee Weinzimmer, Glencoe Public Safety Department.
Beach personnel have since shut down the beach because of the strong currents and are not allowing anyone in the water.