Public toilets and restrooms in St. John, MO

St. John has 3 restrooms on the map: 0 open to the public and 3 in businesses for customers.

Highest-rated first. Updated November 5, 2026. All of Missouri

Customers-only restrooms

Stores, cafés, and restaurants that usually let customers use the restroom. Buy something or ask staff first.

• Costco Business Center

  Business (ask staff) · No ratings yet

  8421 Saint John Industrial Lane, St. John, MO 63114

  Customers only

  Mo-Sa 07:00-18:00; Su 08:00-16:00

• McDonald's

  Business (ask staff) · No ratings yet

  8860 Saint Charles Rock Road, St. John, MO 63114-4565

  Customers only

  Mo-Su 05:00-23:00

• QuikTrip

  Business (ask staff) · No ratings yet

  St. John, MO

  Customers only

Nearby cities

Olivette (3) Clayton (4) Bridgeton (4) Creve Coeur (3) Ladue (9) Maryland Heights (15) Maplewood (3) Florissant (5)