Mayhem Haunted House
Ottumwa, IA 52501
- Nominee - 2024 Haunt of the Year
- Nominee - 2023 Haunt of the Year
- ...and 3 more awards
On the third floor of the old county home and barn, Mayhem Haunted is sure to SCARE! Hundreds of hours are spend each year on set design and décor. This haunt is not thrown together. Attention is paid to detail and on the best ways to get the best scare! Everyone involved in this haunted house are veterans to the haunt industry and it shows!
| Hours of Operation | 7:30 pm - 12 am Intermission break: 10 pm - 10:30 pm |
| Admission Cost | $15 per person admission Cash and Card accepted No pre sales of online tickets |
| Payment Accepted | Cash , Credit Cards , Debit Cards |
Photo Gallery
Nearby Attractions
-
Pierce's Pumpkin Patch
41.8 miles away
-
Thrashers House of Terror
44.5 miles away
-
Uncle Bill's Farm
47.8 miles away
-
Sass Family Farm
49.7 miles away
-
Harvestville Farms Moonlight Maze
54.0 miles away
-
The Deranged Haunted Attraction
56.7 miles away
-
Reviews
This is set in an actual county home that housed mental patients! This year the theme was just that! It’s a longer haunted house that also includes a barn full of scary characters and clowns!
January 2026
| Fun Factor | |
| Haunt Value | |
| Scare Factor |
An excellent Haunted House that is long and well worth the admission. The fact that it's in an old county home makes it even more scary. I'm also glad that they change it up a little here and there each year. But, also keeping some of the favorites. I love the spinning tunnel it's my favorite. I wasn't going to go this year. I suppose because alot of Haunted Houses and trails I've been to in the past don't change much from year to year. Our first time ever going to Mayhem Haunted House was the 2024 season. I'm glad my younger daughter talked me in to going again this year. Looking forward to next year.
November 2025
| Fun Factor | |
| Haunt Value | |
| Scare Factor |
Really good haunt. I greatly enjoyed going through it this year.
November 2025
| Fun Factor | |
| Haunt Value | |
| Scare Factor |
Love this. Not only was it scary but it's even creepier since the building was a mental health hospital. They also had a variety of fear. I don't scare easily but I jumped. Prices are also very fair!
November 2025
| Fun Factor | |
| Haunt Value | |
| Scare Factor | |
| Would Recommend | Yes |
| Event Length | 31-45 minutes |
| Time Visited | After 9PM |
| Kid-friendly | Yes |
We LOVED this haunted house! So many good rooms, dark halls/mazes, and characters!
November 2025
| Fun Factor | |
| Haunt Value | |
| Scare Factor |
1st time going and we had an absolute blast!! So scary the group before us had to be escorted out while sobbing in fear. It was such a mind blowing experience. Such a terrific price for the life long memories I'll have. Seriously, wow. Y'all have out done yourselves. I know I'll be coming back every year in the future. Also loved the food/drink trucks, access to restrooms and even heaters.
November 2025
| Fun Factor | |
| Haunt Value | |
| Scare Factor |
Overall Mayhem is a really great experience!! The system in place for waiting and lining up is very nice, streamlines it a lot. All the employees at the front are super friendly too!!
The actual haunt is very fun! All the actors are very in character and do great jobs :3 set design is also very good. There's a lot of variety in regards to settings.
Only downside is that there are some hallways and areas that are completely dark with turns you can't see or curtains blocking light from the end. There was a small step down in the dark and I did almost eat shit it was very embarrassing. I would suggest dim strip lights on the edges of the floor in those areas mayhaps? Or just anything to mark the walls and the way forward.
Other than that? 10/10 I had a lot of fun indeed. Also got a lot of compliments from the actors and staff teehee
November 2025
| Fun Factor | |
| Haunt Value | |
| Scare Factor | |
| Would Recommend | Yes |
| Event Length | 31-45 minutes |
| Time Visited | After 9PM |
| Kid-friendly | Unsure |
was really good all good actors and even funny with good jokes!!
November 2025
| Fun Factor | |
| Haunt Value | |
| Scare Factor |
Best haunted house I've been to..realistic props.. excellent ghouls, ghosts and insane people ... we look forward to going every year
October 2025
| Fun Factor | |
| Haunt Value | |
| Scare Factor |
I’m really glad they put it back to a mental hospital. But it is so black you have a hard time seeing anything. The actors were really good but there didn’t seem to be very many.
October 2025
| Fun Factor | |
| Haunt Value | |
| Scare Factor |
Share Your Experience
Haunt Owners
| Visitors to This Page: | 19,045 |
| Clicks to Attraction Website: | 5,323 |
| Last Edit to Your Listing: | Sep 28, 2025 |
All information on this page was submitted to Long Island Haunted Houses and was believed to be accurate at the time it was posted. Please report any inaccuracies here.