1 Bedroom Apartments for Rent in O'Fallon, MO (31 Rentals)

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Avenue64 Apartments
Rent Specials
$1,525 - $1,802
Total Monthly Price

Total Monthly Price

Base Rent
$1,525 - $2,776
Total Monthly Price
$1,525 - $2,776
1 Bedroom Apartments Available Now

Avenue64 Apartments

1000 Watermark DrO'Fallon, MO 63368
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Practical Tips for Renters: How to Identify a Great Rental and Avoid Red Flags

Looking for the perfect new rental? Learn great ways to spot the perfect apartment for you, identify common red flags, and avoid rental issues and scams with these expert provided actionable tips.

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Renters Insurance 101: What It Is, What It Covers, and Why You Need It

From theft to fire to water damage, the unexpected can happen to any renter. Discover why renters insurance is one of the smartest and most affordable investments you can make as a tenant.

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Bramblett Hills
1 Bedroom Apartments

Bramblett Hills

1000 Bramblett CrossingO'Fallon, MO 63366
Corporate Housing

How I Find the Perfect Rental for My Clients: A Real Estate Pro's Guide

Finding the right apartment starts with three things: location, cost, and amenities. Get the insider perspective from a real estate professional on how to nail all three.

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Genius Ideas and Studio Layout Tips That Maximize Every Square Inch

Transform your studio apartment layout and maximize storage. Get proven ideas from a 20-year property expert to make any small space stylish and functional.

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St Peters Villa
1 Bedroom Apartments

St Peters Villa

300 Villa Circle DrSt. Peters, MO 63376
  • Utilities Included
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O'Fallon, MO Local Guide

O'Fallon 1 Bedroom Apartment Units with Current Availability by Neighborhood

Availability Confirmed As of: August 24, 2026

There are currently 177 available 1 Bedroom apartment units in O'Fallon, MO neighborhoods that range in price from $1,006 to $1,802. Heres is today's list of the top neighborhoods in O'Fallon with the most available 1 Bedroom apartments:

NeighborhoodAvailable UnitsMedian PriceMin Price
OFallon St Charles95$1,459$1,006
Whispering Woods42$1,475$1,006
Tysons Corner40$1,475$1,111

Largest Available O'Fallon 1 Bedroom Apartments

The largest available 1 Bedroom apartment unit in O'Fallon, MO is found at Preserve at Research Park in the Tysons Corner neighborhood and is 898 square feet priced from $1,390. The Waterways of Lake Saint Louis Apartments in the Lake St. Louis neighborhood has the second largest 1 Bedroom, which is sized at 895 square feet and currently listed start at $1,350. Here is today’s list of the largest available 1 Bedroom units in O'Fallon:

Apartment ListingModel NameSquare FootagePriced From
Preserve at Research ParkMonarch898 Sq Ft$1,390
The Waterways of Lake Saint Louis ApartmentsBrookside895 Sq Ft$1,350
Thornwood ApartmentsWildrose895 Sq Ft$1,350
Harmony Ridge Apartments1 BD/1BA Loft-Prescott III892 Sq Ft$1,580
Bramblett HillsCLOVE770 Sq Ft$1,500
Casalon Parkway Apartments1 Bedroom / Phase 1 & 2750 Sq Ft$1,006
Altair at the PreserveAberdeen750 Sq Ft$1,439
Avenue64 ApartmentsA1725 Sq Ft$1,525
Hearthstone at Autumn Hollow1B/1B - ADA 1st Floor Prairie View End Cap700 Sq Ft$1,280
Prairie Encore1B/1B - 690 sqft - 4th Floor d690 Sq Ft$1,475

Cheapest Available O'Fallon 1 Bedroom Apartments

As of August 24, 2026 the lowest priced 1 Bedroom apartment unit in O'Fallon, MO is the 1 Bedroom / Phase 1 & 2 Model starting from $1,006 at Casalon Parkway Apartments in the Whispering Woods neighborhood. The second most affordable O'Fallon 1 Bedroom is the 1 Bedroom Garden Model at Savannah Ridge Apartments starting at $1,213 . The average price for all 1 Bedroom apartments in O'Fallon is currently $1,459. Here is today’s list of the cheapest available 1 Bedroom options in O'Fallon:

Apartment ListingModel NamePriced From
Casalon Parkway Apartments1 Bedroom / Phase 1 & 2$1,006
Savannah Ridge Apartments1 Bedroom Garden$1,213
Hearthstone at Autumn Hollow1B/1B - ADA 1st Floor Prairie View End Cap$1,280
Synergy at the MeadowsElement$1,312
Thornwood ApartmentsWildrose$1,350
The Waterways of Lake Saint Louis ApartmentsBrookside$1,350
Preserve at Research ParkMonarch$1,390
Timber ClubHickory$1,416
Altair at the PreserveAberdeen$1,439
Prairie Encore1B/1B Corner - Pool View$1,475

Real Estate and Rental Term Glossary | ApartmentHomeLiving.com Renter University

From the letter A all the way to the letter Z, the Real Estate and Rental Term Glossary from the content team at ApartmentHomeLiving.com provides our visitors and shoppers with a little clarity and helpful guidance in navigating the real estate world through definitions and explainers for the top subjects and terms that someone may come across during the leasing, buying, or selling process.

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O'Fallon, MO
Population: 88,472

Ranked #376

in US Census Population by City

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Best Local Schools in
O'Fallon, MO

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Frequently Asked Questions about 1 Bedroom O'Fallon Apartments

How much is the average rent for a 1 Bedroom O'Fallon Apartment?

The average rent for a 1 Bedroom Apartment in O'Fallon is $1,459.

What is the largest available 1 Bedroom O'Fallon Apartment for rent?

Today's apartment with the most square footage in O'Fallon is a 898 square feet unit starting from $1,390 at Preserve at Research Park.

What is the average size for O'Fallon 1 Bedroom Apartments for rent?

The average size for a 1 Bedroom rental in O'Fallon is currently 732 sq ft.

Expert Rental Resources

The rental experts at ApartmentHomeLiving.com provide you with top advice, tools, and tips for understanding the leasing process and finding the perfect rental. Here are a few helpful rental and leasing articles from our experts to guide you on your search.

Articles, How-To's, and Tips

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Practical Tips for Renters: How to Identify a Great Rental and Avoid Red Flags

Written by: Robin Stewart

Renters want to find a great apartment, the right place for them, one that checks all the boxes of location, rental cost, amenities, safety, and more.

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First Apartment Regrets: Real Renters Share What They'd Do Differently

Written by: Robin Stewart

Hindsight is 20/20. Live and Learn. With age comes wisdom. We’re familiar with all those expressions, and all of them apply to lessons first-time renters learn.

decorative image for Renters Insurance 101: What It Is, What It Covers, and Why You Need It article

Renters Insurance 101: What It Is, What It Covers, and Why You Need It

Written by: Robin Stewart

Insurance seems to be a part of life. In some states, having insurance is the law, as is the case for automobile insurance. Renters are no exception.

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Apartment Occupancy Rates: Renter Attraction vs Renter Retention

Written by: Robin Stewart

There’s a tenet in marketing about client or customer attraction and retention. Studies and data have consistently shown it costs less to keep a current customer than to attract a new one.