Looking for apartments for rent in O'Fallon, MO? Find the right fit with 89 available rentals on ForRent.com. From modern downtown high-rises to spacious suburban rentals, ForRent makes it easy to find O'Fallon apartments that fit your lifestyle and budget.

No matter what's on your list of apartment must-haves, ForRent has you covered. Find an apartment in O'Fallon with short-term lease options, fitness centers, and utilities included. Use our filters to find O'Fallon apartments with features like in-unit laundry, balconies, garages, and pet-friendly spaces. Explore different rental types, from one to four-bedroom apartments in O'Fallon to single-family homes, townhomes, and condos. Browse listings now and secure your next apartment in O'Fallon, MO.