St. Louis Aquarium at Union Station: Visitor Facts

Aquarium inside Union Station in downtown St. Louis. Open 9 a.m. to 5 p.m. Sunday to Thursday and 9 a.m. to 6 p.m. Friday and Saturday, with unlimited re-entry the same day. Parking in the South Lot is validated down to $5.Checked October 30, 2026 against the official pages listed under Sources. Prices, hours and seasons change; confirm on the official site before you go.

Zoo or GardenType
St. LouisCity
St. Louis AreaRegion
See BelowAdmission

Header photo: Illustrative photo, not this attraction.

Facts
Directions
Coming Up
Nearby
Sources

Visit Facts at a Glance

Address	201 S 18th Street, St. Louis, MO 63103
Phone	(314) 923-3900
Hours	As printed when we read it on October 30, 2026: Sun-Thurs 9am-5pm; Fri & Sat 9am-6pm. Last admission is 45 minutes before closing.
Admission	As printed: Not published on the page we read (says day passes are not free but affordably priced)
Dogs	Service animals, including working dogs in training with an accredited organization, are always permitted inside the Aquarium… No other animals
Accessibility	Official accessibility page
Tickets and reservations	Official reservations page
Official site	St. Louis Aquarium at Union Station (official)

What to Know

Plan 1 to 3 hours per the FAQ.
No timed ticketing; day pass allows re-entry.
Discounted $5 parking with validation at the gift shop.
Daily feeds and encounters are listed on the home page.

Facts, Each With Its Source

Suggested visit length: at least 1-3 hours (source)
Parking: $5 with validation (source)

Directions and Location

201 S 18th Street, St. Louis, MO 63103. Open in Google Maps

Coming Up Near St. Louis Aquarium at Union Station

Boop! The MusicalOn now through Nov 8 · St. Louis
SOMBR: You Are The Reason TourOct 30 · St. Louis
Mizzou vs. SLU Men's Basketball (Enterprise Center)Nov 6 · St. Louis
The String Cheese Incident: Just Keep Spinning TourNov 6 · Chesterfield · about 18 mi
Three Days GraceNov 7 · St. Louis

Events within 30 miles, straight-line from the place to the centre of the event town, not driving miles; events in towns we have no checked centre for are left out. Dates come from our checked events list and may change; confirm with the organizer.

Nearby

More: Places To Go, state parks and historic sites, St. Louis Area guide, St. Louis Area events.

What We Could Not Verify

Not confirmed

Ticket prices (not on pages read).
Home page carried a stale banner about a closure until September 12.
A map pin: no safe match found, so none is shown.

Questions People Ask

What does St. Louis Aquarium at Union Station cost?

As printed on the official site when we read it: Not published on the page we read (says day passes are not free but affordably priced)

What are the hours at St. Louis Aquarium at Union Station?

As printed on October 30, 2026: Sun-Thurs 9am-5pm; Fri & Sat 9am-6pm. Last admission is 45 minutes before closing.

Where is St. Louis Aquarium at Union Station?

201 S 18th Street, St. Louis, MO 63103.

Sources

Home, read October 30, 2026
Plan Your Visit, read October 30, 2026
FAQ, read October 30, 2026
Accessibility, read October 30, 2026

Checked October 30, 2026 by It’s Missouri. Cite this page: St. Louis Aquarium at Union Station, itsmissouri.com (https://itsmissouri.com/places-to-go-in-missouri/saint-louis-aquarium/), checked 2026-10-30. Free to quote with a link.