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- 1–3 Bedrooms
- $1,415-$2,503Pricing
- 649–1,382Square Feet
About Boulders at Katy Trail
The Boulders at Katy Trail Apartments offers 1-, 2-, and 3-bedroom apartments in St. Charles, MO. Our apartments feature walk-in closets, granite countertops, designer kitchens, built-in wine racks and bookshelves, full-size washer/dryer, and 9-foot ceilings with crown molding. Located in the heart of St. Charles, you'll have easy access to everything you need in the area. Enjoy the scenic landscape, just minutes away from the Katy Trail, the Missouri River, shops, and restaurants. Learn more about The Boulders at Katy Trail when you take a tour with us today.
Boulders at Katy Trail is located in the Saint Charles Neighborhood and 63303 Zip code of St. Charles, MO. This community is professionally managed by Mills Properties
Unique Features and Amenities
- 24 Hour Fitness Center
- Billiards room
- Car Detailing Center
- Fire Pit and Gas Grill
- indoor and outdoor pool
- Lakes and Water Features
- On Demand Virtual Fitness
- Pet Park
- Pickleball Court
Property Contact Info

Floorplan Pricing and Availability
Boulders at Katy Trail offers 1 to 3 Bedroom apartments starting from $1,415 and having 649–1,382 sq ft. Here is the current pricing and availability:
New! Interactive Property Map
1 Bedroom
Show Unavailable FloorplansKeystone
From $1,464
1 Bed, 1 Bath, 766 sq ftAvailable Feb 27Model Gallery
Floorplans
Availability Details
Price Availability Date Unit Sq Ft View Details $1,514 February 27, 2026 131 766 $1,504 March 14, 2026 154 766 $1,464 March 20, 2026 125 766 Model Rent and Fees
Model Price Range
- $1,464 - $1,514
Unit 131 Amenities and Features
Unique Features
- First Floor
- Wood Look Floor
Unit 131 Rent and Fees
Unit Price
- $1,514
View Details and Rent EstimateModel Rent and Fees
Model Price Range
- $1,464 - $1,514
Unit 154 Amenities and Features
Living Space
- Views
Unit 154 Rent and Fees
Unit Price
- $1,504
View Details and Rent EstimateModel Rent and Fees
Model Price Range
- $1,464 - $1,514
Unit 125 Rent and Fees
Unit Price
- $1,464
View Details and Rent EstimateModel Rent and Fees
Model Price Range
- $1,464 - $1,514
Apartment Model: KeystoneFrom $1,4641 Bedroom, 1 Bath, 766 sq ftAvailable February 27, 2026![]()
Keystone - Floorplan 1 Apartment Unit: 131Apartment Model: Keystone$1,5141 Bedroom, 1 Bath, 766 sq ftAvailable February 27, 2026Apartment Unit: 154Apartment Model: Keystone$1,5041 Bedroom, 1 Bath, 766 sq ftAvailable March 14, 2026Apartment Unit: 125Apartment Model: Keystone$1,4641 Bedroom, 1 Bath, 766 sq ftAvailable March 20, 2026Park City
From $1,573
1 Bed, 1 Bath, 771 sq ftAvailable Mar 27Model Gallery
Floorplans
Availability Details
Price Availability Date Unit Sq Ft View Details $1,607 March 27, 2026 303 757 $1,573 May 16, 2026 275 771 Model Rent and Fees
Model Price Range
- $1,573 - $1,607
Unit 303 Amenities and Features
Living Space
- Views
Unit 303 Rent and Fees
Unit Price
- $1,607
View Details and Rent EstimateModel Rent and Fees
Model Price Range
- $1,573 - $1,607
Unit 275 Rent and Fees
Unit Price
- $1,573
View Details and Rent EstimateModel Rent and Fees
Model Price Range
- $1,573 - $1,607
Apartment Model: Park CityFrom $1,5731 Bedroom, 1 Bath, 771 sq ftAvailable March 27, 2026![]()
Park City - Floorplan 1 Apartment Unit: 303Apartment Model: Park City$1,6071 Bedroom, 1 Bath, 757 sq ftAvailable March 27, 2026Apartment Unit: 275Apartment Model: Park City$1,5731 Bedroom, 1 Bath, 771 sq ftAvailable May 16, 2026Aspen
$1,415
1 Bed, 1 Bath, 649 sq ftAvailable May 8Cheapest 1 BedroomThis is the cheapest 1 Bedroom at this PropertyModel Gallery
Floorplans
Availability Details
Price Availability Date Unit Sq Ft $1,415 May 8, 2026 098 649 Unit 098 Amenities and Features
Unique Features
- First Floor
Unit 098 Rent and Fees
Unit Price
- $1,415
View Details and Rent EstimateModel Rent and Fees
Price
- $1,415
Apartment Model: Aspen$1,4151 Bedroom, 1 Bath, 649 sq ftAvailable May 8, 2026![]()
Aspen - Floorplan 1 Apartment Unit: 098Apartment Model: Aspen$1,4151 Bedroom, 1 Bath, 649 sq ftAvailable May 8, 2026Copper Mountain
1 Bed, 1 Bath, 856 sq ftLargest 1 BedroomThis is the largest 1 Bedroom at this PropertyModel Gallery
Floorplans
Availability Details
Availability Date Unit Sq Ft Call for Availability Copper Mountain 856 sq ft Apartment Model: Copper MountainCall For Rates1 Bedroom, 1 Bath, 856 sq ftUnavailable![]()
Copper Mountain - Floorplan 1 2 Bedrooms
Show Unavailable FloorplansBreckenridge
From $2,133
2 Beds, 2 Baths, 1100 sq ftAvailable NowModel Gallery
Floorplans
Availability Details
Price Availability Date Unit Sq Ft View Details $2,133 Available Now 298 1100 $2,203 March 28, 2026 250 1100 Model Rent and Fees
Model Price Range
- $2,133 - $2,203
Unit 298 Rent and Fees
Unit Price
- $2,133
View Details and Rent EstimateModel Rent and Fees
Model Price Range
- $2,133 - $2,203
Unit 250 Amenities and Features
Features
- Fireplace
Unique Features
- Wood Look Floor
Unit 250 Rent and Fees
Unit Price
- $2,203
View Details and Rent EstimateModel Rent and Fees
Model Price Range
- $2,133 - $2,203
Apartment Model: BreckenridgeFrom $2,1332 Bedroom, 2 Bath, 1100 sq ftAvailable Now![]()
Breckenridge - Floorplan 1 Apartment Unit: 298Apartment Model: Breckenridge$2,1332 Bedroom, 2 Bath, 1100 sq ftAvailable NowApartment Unit: 250Apartment Model: Breckenridge$2,2032 Bedroom, 2 Bath, 1100 sq ftAvailable March 28, 2026Sun Valley
From $2,263
2 Beds, 2.5 Baths, 1210 sq ftAvailable NowModel Gallery
Floorplans
Availability Details
Price Availability Date Unit Sq Ft View Details $2,263 Available Now 067 1210 $2,303 March 13, 2026 019 1210 $2,503 March 20, 2026 005 1210 Model Rent and Fees
Model Price Range
- $2,263 - $2,503
Unit 067 Rent and Fees
Unit Price
- $2,263
View Details and Rent EstimateModel Rent and Fees
Model Price Range
- $2,263 - $2,503
Unit 019 Amenities and Features
Unique Features
- Wood Look Floor
Unit 019 Rent and Fees
Unit Price
- $2,303
View Details and Rent EstimateModel Rent and Fees
Model Price Range
- $2,263 - $2,503
Unit 005 Amenities and Features
Unique Features
- Wood Look Floor
Unit 005 Rent and Fees
Unit Price
- $2,503
View Details and Rent EstimateModel Rent and Fees
Model Price Range
- $2,263 - $2,503
Apartment Model: Sun ValleyFrom $2,2632 Bedroom, 2.5 Bath, 1210 sq ftAvailable Now![]()
Sun Valley - Floorplan 1 Apartment Unit: 067Apartment Model: Sun Valley$2,2632 Bedroom, 2.5 Bath, 1210 sq ftAvailable NowApartment Unit: 019Apartment Model: Sun Valley$2,3032 Bedroom, 2.5 Bath, 1210 sq ftAvailable March 13, 2026Apartment Unit: 005Apartment Model: Sun Valley$2,5032 Bedroom, 2.5 Bath, 1210 sq ftAvailable March 20, 2026Vail
From $2,013
2 Beds, 2 Baths, 1079 sq ftAvailable Mar 17Cheapest 2 BedroomThis is the cheapest 2 Bedroom at this PropertyModel Gallery
Floorplans
Availability Details
Price Availability Date Unit Sq Ft View Details $2,013 March 17, 2026 009 1079 $2,043 April 18, 2026 014 1079 Model Rent and Fees
Model Price Range
- $2,013 - $2,043
Unit 009 Amenities and Features
Living Space
- Views
Unit 009 Rent and Fees
Unit Price
- $2,013
View Details and Rent EstimateModel Rent and Fees
Model Price Range
- $2,013 - $2,043
Unit 014 Amenities and Features
Features
- Fireplace
Living Space
- Views
Unit 014 Rent and Fees
Unit Price
- $2,043
View Details and Rent EstimateModel Rent and Fees
Model Price Range
- $2,013 - $2,043
Apartment Model: VailFrom $2,0132 Bedroom, 2 Bath, 1079 sq ftAvailable March 17, 2026![]()
Vail - Floorplan 1 Apartment Unit: 009Apartment Model: Vail$2,0132 Bedroom, 2 Bath, 1079 sq ftAvailable March 17, 2026Apartment Unit: 014Apartment Model: Vail$2,0432 Bedroom, 2 Bath, 1079 sq ftAvailable April 18, 2026Winter Park
$2,333
2 Beds, 2 Baths, 1082 sq ftAvailable Apr 17Model Gallery
Floorplans
Availability Details
Price Availability Date Unit Sq Ft $2,333 April 17, 2026 267 1200 Unit 267 Rent and Fees
Unit Price
- $2,333
View Details and Rent EstimateModel Rent and Fees
Price
- $2,333
Apartment Model: Winter Park$2,3332 Bedroom, 2 Bath, 1082 sq ftAvailable April 17, 2026![]()
Winter Park - Floorplan 1 ![]()
Winter Park - Floorplan 2 Apartment Unit: 267Apartment Model: Winter Park$2,3332 Bedroom, 2 Bath, 1200 sq ftAvailable April 17, 2026Beaver Creek
2 Beds, 1 Bath, 1020 sq ftModel Gallery
Floorplans
Availability Details
Availability Date Unit Sq Ft Call for Availability Beaver Creek 1020 sq ft Apartment Model: Beaver CreekCall For Rates2 Bedroom, 1 Bath, 1020 sq ftUnavailable![]()
Beaver Creek - Floorplan 1 Snowbird
2 Beds, 1 Bath, 1051 sq ftModel Gallery
Floorplans
Availability Details
Availability Date Unit Sq Ft Call for Availability Snowbird 1051 sq ft Apartment Model: SnowbirdCall For Rates2 Bedroom, 1 Bath, 1051 sq ftUnavailable![]()
Snowbird - Floorplan 1 Steamboat
2 Beds, 2 Baths, 1139 sq ftModel Gallery
Floorplans
Availability Details
Availability Date Unit Sq Ft Call for Availability Steamboat 1139 sq ft Apartment Model: SteamboatCall For Rates2 Bedroom, 2 Bath, 1139 sq ftUnavailable![]()
Steamboat - Floorplan 1 Deer Valley
2 Beds, 2.5 Baths, 1382 sq ftLargest 2 BedroomThis is the largest 2 Bedroom at this PropertyModel Gallery
Floorplans
Availability Details
Availability Date Unit Sq Ft Call for Availability Deer Valley 1382 sq ft Apartment Model: Deer ValleyCall For Rates2 Bedroom, 2.5 Bath, 1382 sq ftUnavailable![]()
Deer Valley - Floorplan 1 3 Bedrooms
Innsbrook
$2,422
3 Beds, 2 Baths, 1305 sq ftAvailable Apr 16Model Gallery
Floorplans
Availability Details
Price Availability Date Unit Sq Ft $2,422 April 16, 2026 167 1305 Unit 167 Amenities and Features
Unique Features
- First Floor
- Wood Look Floor
Unit 167 Rent and Fees
Unit Price
- $2,422
View Details and Rent EstimateModel Rent and Fees
Price
- $2,422
Apartment Model: Innsbrook$2,4223 Bedroom, 2 Bath, 1305 sq ftAvailable April 16, 2026![]()
Innsbrook - Floorplan 1 Apartment Unit: 167Apartment Model: Innsbrook$2,4223 Bedroom, 2 Bath, 1305 sq ftAvailable April 16, 2026
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Property Information
- 314 Units
- 3 Stories
- Built in 2002
- View Property Website
Lease Terms
- 6 - 15 mo
- Short Term Lease Options
Fees and Policies
The fees listed below are community-provided and may exclude utilities or add-ons. All payments are made directly to the property and are non-refundable unless otherwise specified. Use the Cost Calculator to determine costs based on your needs.
Required Fees
One-Time Basics
- Due at Application
- Application Fee Per ApplicantiCharged per applicant.$60
- Due at Move-In
- Administrative FeeiCharged per unit.$300
Other Fees
Pet Fees
- One-Time Pet FeeiMax of 2. Charged Per Pet.$250
- Monthly Pet FeeiMax of 2. Charged Per Pet.$25
- One-Time Pet FeeiMax of 2. Charged Per Pet.$250
- Monthly Pet FeeiMax of 2. Charged Per Pet.$25
Cat
We welcome 2 pets per apartment. There is a one-time, non-refundable pet fee of $250 per pet. Pet rent is $25 per month per animal. We use a third-party pet screening company during the application process for all applicants to complete. Please contact our leasing office for complete Pet Policy information.
Dog
We welcome 2 pets per apartment. There is a one-time, non-refundable pet fee of $250 per pet. Pet rent is $25 per month per animal. We use a third-party pet screening company during the application process for all applicants to complete. Please contact our leasing office for complete Pet Policy information.
Max of 2.
Parking Fees
- Parking DepositiCharged per vehicle.$0
- Parking FeeiCharged Per Vehicle.$65
- Parking DepositiCharged per vehicle.$0
Other
We have open, surface lot parking for residents. We also offer carports and detached garages. Please contact the leasing office for rates and availability.
Surface Lot
We have open, surface lot parking for residents. We also offer carports and detached garages. Please contact the leasing office for rates and availability.
Storage Fees
- Storage DepositiCharged per rentable item.$0
- Storage RentiCharged per rentable item.$50/mo
Storage Unit
Property Fee Disclaimer: Based on community-supplied data and independent market research. Subject to change without notice. May exclude fees for mandatory or optional services and usage-based utilities.
Features and Amenities
Unique Amenities
- 24 Hour Fitness Center
- Billiards room
- Car Detailing Center
- Fire Pit and Gas Grill
- indoor and outdoor pool
- Lakes and Water Features
- On Demand Virtual Fitness
- Pet Park
- Pickleball Court
Community Features
- Corporate Housing
Outdoor Features
- Grill
Recreation and Fitness
- Fitness Center
- Pickleball Court
- Pool

Map
- Shopping
- Colleges
- Grocery
- Medical

Map
Hours and Contact Info
| Monday | 8:30 am–5:00 pm |
| Tuesday | 8:30 am–5:00 pm |
| Wednesday | 8:30 am–5:00 pm |
| Thursday | 8:30 am–5:00 pm |
| Friday | 8:30 am–5:00 pm |
| Saturday | 10:00 am–4:00 pm |
| Sunday | Closed |
What Are Walk Score®, Transit Score®, and Bike Score® Ratings?
- Walk Score® measures the walkability of any address.
- Transit Score® measures access to public transit.
- Bike Score® measures the bikeability of any address.
Frequently Asked Questions about Boulders at Katy Trail
Where is Boulders at Katy Trail located?
Boulders at Katy Trail is located at 100 Katy Trail Ln near the Saint Charles area of St. Charles, MO
What is the current rent range at Boulders at Katy Trail?
1 Bedroom to 3 Bedroom Apartments at Boulders at Katy Trail currently range from $1,415 to $2,503
When is the leasing office open?
- The office Hours for Boulders at Katy Trail are
- Monday 8:30 am–5:00 pm
- Tuesday 8:30 am–5:00 pm
- Wednesday 8:30 am–5:00 pm
- Thursday 8:30 am–5:00 pm
- Friday 8:30 am–5:00 pm
- Saturday 10:00 am–4:00 pm
- Sunday Closed
Are pets allowed?
Call us today to find out our pet policy and if we allow pets
Renters Reviews and Ratings
I love this complex!
February 6, 2025I have visited Katy Trails several times, and after I graduate college I plan to call it my home. The manager was so sweet and welcoming!Property Manager Responded
February 8, 2025Hi, thank you so much for the positive review! Thank you again for taking the time to let us know how we did. We hope you have a great day!
Review from Apartments.com
Do not be tempted to live here
November 16, 2024The managers and maintenance is absolutely horrible for the amount of money and level of service Katy trails claims to provide. You can see by the people moving out and people moving in just how horrible it has become. The management and matinee have been slow to respond or unresponsive even when it comes to issues. The apartments seem nice but are horribly constructed with the cheapest materials. As a commercial general contractor they should be embarrassed. I know resort and luxury apartments ...use things that are easily available and uniform. That usually falls into a cheaper category, but this complex goes above and beyond to cut corners to provide the cheapest and worst quality flooring, cabinets, appliances, and utilities. They will expect you to pay for things at outlandish prices as well such as carpet to make even more money. Save yourself the time and headache of living in this community. I was excited to leave this place, like most of residents that have watched the changes as they charge more and give you less.Property Manager Responded
February 8, 2025Hi there, we appreciate your honest review. We set a high standard for ourselves, so we are disappointed to hear that your experience with us was not a positive one.
Read MoreReview from Apartments.com
Beautiful Complex
April 30, 2024We’ve lived here for over a year now and we have nothing but good things to say. The neighborhood is quiet, the neighbors are friendly and the property staff are amazing and helpful. This is one of the best apartment complex in Saint Charles! -N. Schlottman and B.SanchezProperty Manager Responded
October 15, 2024Thank you again for taking the time to let us know how we did. We hope you have a great day! Thank you again for the great review!
Review from Apartments.com
Amazing Location and Friendly Neighborhood!
April 30, 2024We haven’t moved into these apartments long and I can honestly say best decision ever !! Not only are their scenic views are a plus but the apartments are absolutely gorgeous ! Many things are close by and the community is great !!Property Manager Responded
May 6, 2024Thank you again for taking the time to let us know how we did. We hope you have a great day!
Review from Apartments.com
Amazing Complex
April 9, 2024I visit here very often and absolutely love how the property is very well maintained and the apartments are spacious and clean. The ponds are a very nice touch and relaxing to be by. And the staff is always courteous and respectful. They know you by name which is very comforting. Excellent complex to visit and to live at.Property Manager Responded
April 10, 2024Thank you for the great review. We are glad you enjoy our beautiful grounds.
Review from Apartments.com
Gorgeous property!
April 4, 2024Lived here almost a year and renewed my lease for 15 months. Love the grounds and the staff has been amazing to work with.Property Manager Responded
April 8, 2024Thank you for the 5- star review. We are so happy you will be with us an additional 15 months.
Review from Apartments.com
I would rent here again
September 23, 2021As someone renting an apartment for the first time in 25yrs I was a bit apprehensive about everything. I was very familiar with the area and property though and ended up renting a 2bdrm, 2.5bth townhouse. I am finishing my 1yr lease moving on to a transition out of state. My experience at The Boulders at Katy Trails though has been fantastic. The staff has been great (in my very minimal interactions), any issues or questions I had were addressed and resolved very quickly and the maintenance ...staff is top notch!! I would recommend the complex to anyone looking for more than just an apartment. The setting, landscaping, pool and location set it apart. The apartments are good sized and garages are available too (I rented one while here). I always felt that my son and I were safe, as well as my cars and property. The location can't be beat and frankly it's just a nice property to roam as well. The entire experience was much better than I anticipated or could have hoped for. Kudos to the team here!!Property Manager Responded
October 8, 2021Hello - thank you for the great review! We love hearing about your positive experience and interactions. Best of luck with your upcoming move.
Read MoreReview from Apartments.com
l LOVE living here!
September 9, 2015My boyfriend and I recently moved to Missouri and after a decent search decided to live at the Boulders. The complex contains both condos and apartments that have a very luxurious feel. There is always someone in the office at the clubhouse if you need help with anything. The employees are all very nice and helpful. The complex has many cool features like a basketball/tennis court, indoor and outdoor pools, a small theatre, a computer room, a massage room, a putting green, a catch and release ...pond, and a car wash port with hoses. Our apartment is very clean and beautiful. It has plenty of space for our big sectional couch and we love sitting out on our balcony. Each unit has a washer and dryer which is very convenient. We also like how quiet it is here. You do not hear neighbors yelling or stomping and there aren't kids running around everywhere. The only negative I would say is that depending on where your unit it, you can be sort of far away from your mailbox and the clubhouse and pool. We don't mind not being close to the pool, but I do wish the mail was closer. Overall though, it is by far the best apartment I have ever lived in and it felt like home right when we moved in.Read MoreReview from Apartments.com
Nearby Schools
Barnwell Middle
Francis Howell North High
Harvest Ridge Elementary
About GreatSchools Data on ApartmentHomeLiving.com.
Points of Interest
Time and distance from Boulders at Katy Trail.
Big Box and Retail
Walgreens
Walmart
Petsmart
Colleges and Universities
Chamberlain College of Nursing-Saint Louis - Saint Louis Campus
Groceries
Aldi
Whole Foods
Schnucks
Hospitals
Military Bases
Lambert-St Louis Air National Guard
Shopping Centers
Boulders at Katy Trail has 5 shopping centers within 1.8 miles.
Nearby Neighborhoods
Rental Price Ranges in the Area
| Bedroom | Average Rent | Cheapest Rent | Highest Rent |
|---|---|---|---|
| St. Charles Studio Apartments | $1,145 | $777 | $1,499 |
| St. Charles 1 Bedroom Apartments | $1,424 | $800 | $2,317 |
| St. Charles 2 Bedroom Apartments | $1,737 | $895 | $3,271 |
| St. Charles 3 Bedroom Apartments | $1,988 | $1,226 | $2,525 |
| St. Charles 4 Bedroom Apartments | $2,278 | $2,157 | $2,399 |
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Max of 2.