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 35 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.

Zooline Railroad Hours

Hours: 11 a.m. to 3 p.m., weather permitting

Hours are subject to change.

Zoo Hours


  • 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.
  • Groups of 15 or more may purchase discounted train tickets by calling group services in advance at (314) 646-4718 or 1-800-966-8877

*You may leave the train, visit exhibits and reboard. Personal fold-up strollers and large personal items are permitted if riding in a seat with at least one passenger at all times. Zoo-rented strollers may not be taken on the train.