St. Louis Zoo

Regular Hours

2022 Winter Hours (January 2 through March 4) 9 a.m. to 4 p.m. 2022 Spring Hours (March 5 through May 12) 9 a.m. to 5 p.m. daily 2022 Summer Hours (May 13 through August 14) 8 a.m. to 5 p.m. — Sunday through Thursday* 8 a.m. to 7 p.m. — Friday** and Saturday 8 a.m. to 7 p.m. — Memorial Day Weekend (Friday through Monday, May 27-30) 8 a.m. to 5 p.m. — Independence Day (Monday, July 4) *Zoo closes at 4:30 p.m. on Wednesdays, May 25, June 22, July 27 (Night at the Zoo ticketed event) **Zoo closes at 3 p.m. on Friday, June 17 (A Zoo Ado ticketed event) August 15 through September 2 9 a.m. to 5 p.m. daily* *Zoo closes at 4:30 p.m. on Wednesday, August 24 (Jammin' at the Zoo ticketed event) Labor Day Weekend (Saturday through Monday, September 3-5) 8 a.m. to 7 p.m. 2022 Fall Hours September 6 through October 12, 2022 9 a.m. to 5 p.m. October 13 through December 31, 2022 9 a.m. to 4 p.m. daily, except holidays listed below Holiday Hours 9 a.m. to 3 p.m. on Thursday, November 24 (Thanksgiving Day) 9 a.m. to 3 p.m. on Saturday, December 24 (Christmas Eve) Closed all day on Sunday, December 25 (Christmas Day) 9 a.m. to 3 p.m. on Saturday, December 31 (New Year's Eve) Closed all day on Sunday, January 1, 2023 (New Year's Day)