- FreeEntry
- State Historic SiteType
- St. Louis AreaRegion
- See Hours BelowGrounds
Visit Facts at a Glance
| Address | 1050 Charles J. Becker Drive, Imperial, MO 63052-3524 |
|---|---|
| Phone | Office Phone: 636-464-2976 |
| County | Jefferson (from OpenStreetMap, approximate) |
| Official page | Missouri State Parks: Mastodon State Historic Site |
What the Official Page Mentions
The park system’s own pages for Mastodon State Historic Site mention: hiking, picnicking, bird watching, a museum. That is a list of topics, not a promise that each is open today; check the park’s status before you go.
Hours
As the park system prints them, checked October 30, 2026: 8 a.m. to half-hour after sunset, daily, year-round; Museum; March 16 through Nov. 15; Museum closed Monday and Tuesday; 9 a.m. to 4:30 p.m. Wednesday through Saturday; Noon to 4:30 p.m. Sunday (closed Easter Sunday); Nov. 16 through March 15; Museum closed Monday through Wednesday; 11 a.m. to 4 p.m. Thursday through Saturday; Noon to 4 p.m. Sunday; Historic Site Office Hours; 9 a.m. to 4:30 p.m., Monday through Saturday; Noon to 4:30 p.m., Sunday (closed Easter Sunday); Please note there will be times when the office is temporarily closed while staff are working on the grounds. The office telephone is monitored for messages during office hours.
For weather closures, maintenance and trail closures, see the state’s Park and Site Status Map.
Directions and Location
1050 Charles J. Becker Drive, Imperial, MO 63052-3524. Open in Google Maps
Dogs and Pets
The statewide rule, from the park system: pets stay on a leash no longer than 10 feet and under control; they are not allowed inside any state park or historic site building, or in public swimming areas and beaches. Read October 30, 2026. This park may add its own limits; we did not find a separate dog rule for Mastodon State Historic Site.
Nearby in St. Louis Area
- Sandy Creek Covered Bridge State Historic Site
- Castlewood State Park
- Route 66 State Park
- Don Robinson State Park
- Scott Joplin House State Historic Site
- Robertsville State Park
More: all Missouri state parks and historic sites, St. Louis Area guide, St. Louis Area events.
Coming Up Near Mastodon State Historic Site
- Boop! The MusicalOn now through Nov 8 · St. Louis · about 20 mi
- SOMBR: You Are The Reason TourOct 30 · St. Louis · about 20 mi
- Mizzou vs. SLU Men's Basketball (Enterprise Center)Nov 6 · St. Louis · about 20 mi
- The String Cheese Incident: Just Keep Spinning TourNov 6 · Chesterfield · about 22 mi
- Three Days GraceNov 7 · St. Louis · about 20 mi
Events within 40 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.
What We Could Not Verify
- Prices for tours, cave visits, camping and lodging: not read for this unit.
- Whether every feature listed above is open this week: use the status map.
- The exact entrance: the map pin is approximate, from OpenStreetMap.
- Photos: none shown; we place a photo only when it is a true match for the page.
- Entry is free per the state tourism guide read October 30, 2026; the park system’s page for this unit does not repeat it.
Questions People Ask
Is Mastodon State Historic Site free to enter?
The state tourism guide says Missouri state parks and historic sites are free to enter. Tours, camping and cave visits can have their own prices, which we have not confirmed here.
What are the hours at Mastodon State Historic Site?
See hours below. See the Hours section for the full schedule as the park system prints it.
Are dogs allowed at Mastodon State Historic Site?
Dogs on a leash of 10 feet or less are welcome outdoors under the statewide rule, but not inside buildings or in swimming areas. Check the park for added limits.
Where is Mastodon State Historic Site?
1050 Charles J. Becker Drive, Imperial, MO 63052-3524.
Sources
- Missouri State Parks: Mastodon State Historic Site, read October 30, 2026
- Missouri State Parks: hours for Mastodon State Historic Site, read October 30, 2026
- Enjoying Missouri State Parks with Your Pet (Missouri State Parks), read October 30, 2026
- Missouri State Parks: A Visitor’s Guide (Missouri Division of Tourism), read October 30, 2026
- Missouri State Parks: Park and Site Status Map, read October 30, 2026
Checked October 30, 2026 by It’s Missouri. Cite this page: Mastodon State Historic Site, itsmissouri.com (https://itsmissouri.com/places/mastodon-state-historic-site/), checked 2026-10-30. Free to quote with a link.