521 Mark Twain Loop
Union, MO 63084
3 Beds
4 Baths
1,554 sqft (on 1.14 acres)
3 Beds
4 Baths
1,554 sqft
(on 1.14 acres)
Local Information
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Description
This single-family home is located at 521 Mark Twain Loop, Union, MO. 521 Mark Twain Loop is in Union, MO and in ZIP code 63084. This property has 3 bedrooms, 4 bathrooms and approximately 1,554 sqft of floor space. This property has a lot size of 1.14 acres and was built in 2002.
This property is off market, which means it's not currently listed for sale or rent on Trulia. This may be different from what's available on other websites or public sources.
Home Highlights
Parking
No Info
Outdoor
No Info
HOA
None
Price/Sqft
No Info
Listed
No Info
Home Details for 521 Mark Twain Loop
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Levels, Entrance, & Accessibility Stories: 1 |
Interior Details Number of Rooms: 8 |
Fireplace & Spa Fireplace |
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Year Built Year Built: 2002 |
Property Type / Style Property Type: Single Family HomeArchitecture: A-frame |
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Lot Area: 1.14 acres |
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Property Tax and Assessment
| Year | 2024 |
|---|---|
| Tax | $2,070 |
| Assessment | $204,160 |
Home facts updated by county records
Comparable Sales for 521 Mark Twain Loop
Address | Distance | Property Type | Sold Price | Sold Date | Bed | Bath | Sqft |
|---|---|---|---|---|---|---|---|
0.10 | Single-Family Home | - | 12/02/25 | 3 | 3 | 1,796 | |
0.10 | Single-Family Home | - | 05/16/25 | 3 | 2.5 | 1,940 | |
0.42 | Single-Family Home | - | 06/25/25 | 3 | 2.5 | 1,950 | |
0.32 | Single-Family Home | - | 01/29/26 | 3 | 2 | 2,738 | |
0.44 | Single-Family Home | - | 01/09/26 | 3 | 2 | 1,200 | |
0.39 | Single-Family Home | - | 12/03/25 | 3 | 2 | 1,250 | |
0.38 | Single-Family Home | - | 07/02/25 | 4 | 4.5 | 3,630 | |
0.80 | Single-Family Home | - | 08/01/25 | 4 | 4 | 4,158 | |
1.27 | Single-Family Home | - | 08/13/25 | 4 | 3.5 | 1,963 | |
1.19 | Single-Family Home | - | 06/02/25 | 4 | 3 | 2,642 |
Assigned Schools
These are the assigned schools for 521 Mark Twain Loop.
- Central Elementary School
- PK-5
- Public
- 635 Students
7/10GreatSchools RatingParent Rating AverageThis school has the potential to be great. They have great teachers for the most part. 3 out of the 4 teachers we have encountered with my son have helped him flourish instead of bring him down to be the same as the other students to make it easier. They have shoved so many children in these classrooms that they all get lost in the mix. No individualized teaching can happen. No leeway or expectations made to better students that need it. We have taken my son out of this school to help him to the best of our ability.Parent Review6y ago - Union High School
- 9-12
- Public
- 1011 Students
5/10GreatSchools RatingParent Rating AverageAttended Union R-XI from K-12. I went on to graduate from a top 100 university on the East Coast. The school district serves its purpose to conduct general basic education to small town and rural kids. I would not move to the area to attend Union schools. My parents worked in town, so our options were Union or Borgia is Washington (I am not Catholic). I was lucky to have parents that spent money to send me to camps and other enrichment activities. Otherwise, I would have fallen short on college prep. Now, I live in St. Louis County and I’m selective about where I reside. Currently, my primary residence is located in the Rockwood School District. I’m giving the district 3/5 because they serve a purpose and provide general education.Other Review1y ago - Union Middle School
- 6-8
- Public
- 683 Students
9/10GreatSchools RatingParent Rating AverageSingle parent and longtime educator (20 years) here. If you have the option to send your children to a different school, I would not hesitate. I am in the process of withdrawing my own child due to the severity of the bullying they have experienced. The incidents have become so intense and traumatic that they border on abuse.Despite multiple formal bullying reports and repeated conversations with the principal, superintendent, and school counselor, I have seen no meaningful action taken to protect my child or address the situation. The lack of follow-through has been deeply alarming.In addition, many faculty members appear overworked, overwhelmed, or simply unwilling to intervene. Their responses to serious concerns often default to the dismissive “just ignore it,” which is not only ineffective but harmful.As both a parent and an educator, I expect a school environment that is safe, responsive, and supportive. Unfortunately, this has not been our experience.Parent Review5mo ago 
Check out schools near 521 Mark Twain Loop.
What Locals Say about Union
At least 70 Trulia users voted on each feature.
92 % Say car is needed
89 % Say parking is easy
80 % Say yards are well-kept
76 % Say kids play outside
72 % Say there's holiday spirit
68 % Say people would walk alone at night
66 % Say it's dog friendly
57 % Say it's quiet
49 % Say streets are well-lit
47 % Say it's walkable to grocery stores
46 % Say they plan to stay for at least 5 years
45 % Say neighbors are friendly
44 % Say there are sidewalks
42 % Say there's wildlife
39 % Say it's walkable to restaurants
20 % Say there are community events
Learn more about our methodology.
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521 Mark Twain Loop, Union, MO 63084 is a 3 bedroom, 4 bathroom, 1,554 sqft single-family home built in 2002. This property is not currently available for sale. The current Trulia Estimate for 521 Mark Twain Loop is $365,700.