Saint Louis Zoo is always free — general admission never costs anything. Not stated as required for general admission Verified on Saint Louis Zoo's own page, last checked 2026-09-04.
| Free day | Always free |
|---|---|
| Who qualifies | Open to everyone |
| Reservation | Not stated as required for general admission |
| What's included | General zoo admission |
| Regular adult price | N/A — always free |
| Source | stlzoo.org · checked 2026-09-04 |
Saint Louis Zoo doesn't need a calendar — general admission is free every day it's open.
Eligibility: Open to everyone. General zoo admission. Skipping the ticket window here saves N/A — always free per adult.
Worth knowing: The Saint Louis Zoo stays free thanks to a dedicated regional property-tax district, not philanthropy alone.
Saint Louis Art Museum (always free) · Saint Louis Science Center (always free) — or see the full free museum days in St. Louis guide.
↥ Check another museum → Browse all free museum & zoo days →
General admission is always free, funded by the Metropolitan Zoological Park and Museum District (a regional property-tax subsidy). Paid attractions: 4D Theater, Conservation Carousel, Sea Lion Show, Stingrays at Caribbean Cove, Zooline Railroad, parking, and equipment rentals (bundled in an optional Adventure Pass, ~$14.95/person).
Not stated as required for general admission
General zoo admission
N/A — always free. That's what a well-timed visit saves you.