Public toilets and restrooms in Lake St. Louis, MO

Lake St. Louis has 7 restrooms on the map: 1 open to the public and 6 in businesses for customers. 1 is open 24 hours.

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

Public restrooms

• Boulevard Park restroom

  Park restroom · No ratings yet

  Lake St. Louis, MO

Customers-only restrooms

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

• Denny's

  Business (ask staff) · No ratings yet

  Lake St. Louis, MO

  Customers only

• Lowe's

  Business (ask staff) · No ratings yet

  6302 Ronald Reagan Drive, Lake St. Louis, MO 63367

  Customers only

  Mo-Sa 06:00-22:00; Su 07:00-20:00

• McDonald's

  Business (ask staff) · No ratings yet

  885 Robert Raymond Drive, Lake St. Louis, MO 63367

  Customers only

  Mo-Fr 05:00-22:00; Sa-Su 06:00-22:00

• McDonald's

  Business (ask staff) · No ratings yet

  2144 West Terra Lane, Lake St. Louis, MO 63366

  Customers only

  Mo-Sa 05:00-23:00; Su 06:00-23:00

• QuikTrip

  Business (ask staff) · No ratings yet

  Lake St. Louis, MO

  Customers only

• Walmart Supercenter

  Business (ask staff) · No ratings yet

  6100 Ronald Reagan Drive, Lake St. Louis, MO 63367

  Customers only

  24/7

Nearby cities

St. Charles County (50) Wentzville (5) St. Peters (13) Chesterfield (3) St. Charles (16) Wildwood (25) Warren County (4) Maryland Heights (15)