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Emerson Zooline Railroad

ALL ABOARD! The Emerson Zooline Railroad offers a 20-minute narrated tour weaving through tunnels and past favorite animal exhibits on a 1½-mile round trip. One of the Zoo's most popular attractions, the Zooline Railroad has transported more than 39 million visitors since 1963. The railroad operates year-round, weather permitting.

The Zooline Railroad is ADA accessible. Passengers in wheelchairs have a large area on the train car, with fold down seats for companions. The Zoo has also added ramps with lower slopes.

The hours of operations for each attraction may vary. We highly suggest calling Guest Relations at 314-781-0900 for the current schedule.


  • Tickets are $7.95 and include all day on-off privileges. Tickets expire at end of day.
  • Children under age 2 are free. Purchase tickets at any of four stations for a tour of the Zoo. Save with an Adventure Pass!
  • You may leave the train, visit exhibits and re-board. Large personal items are permitted if riding in a seat with at least one passenger at all times.
  • Personal fold-up strollers and Zoo-rented strollers may not be taken on the train.
Adventure Pass