3-Bedroom Apartment Rent in O Fallon, IL
Median asking rent for a 3-bedroom apartment in O Fallon, Illinois as of July 2026. That's +16% higher than the citywide median of $1,599 and +13% below the national 3-bedroom median of $2,130.
Income needed for a 3-bedroom in O Fallon
Using the standard 30% rent-to-income guideline (the threshold above which households are considered rent-burdened), here's what you need to earn to comfortably afford a 3-bedroom at the current median rent.
Rent by apartment size in O Fallon
Compare O Fallon's median rent across every apartment size.
Cheapest cities for a 3-bedroom in Illinois
| # | City | 3-Bedroom rent |
|---|---|---|
| 1 | Rantoul | $988 |
| 2 | Pekin | $1,190 |
| 3 | Dixon | $1,210 |
| 4 | Macomb | $1,220 |
| 5 | Charleston | $1,230 |
| 6 | Danville | $1,230 |
| 7 | Quincy | $1,230 |
| 8 | Swansea | $1,243 |
| 9 | Rock Island | $1,290 |
| 10 | Decatur | $1,310 |
| 11 | Savoy | $1,310 |
| 12 | Carbondale | $1,320 |
| 13 | Moline | $1,320 |
| 14 | Peoria | $1,340 |
| 15 | Urbana | $1,355 |
Most expensive cities for a 3-bedroom in Illinois
| # | City | 3-Bedroom rent |
|---|---|---|
| 1 | Morton Grove | $3,390 |
| 2 | Lake Forest | $3,390 |
| 3 | Deerfield | $3,390 |
| 4 | Barrington | $3,390 |
| 5 | Wilmette | $3,250 |
| 6 | Buffalo Grove | $3,250 |
| 7 | Highland Park | $3,200 |
| 8 | Plainfield | $3,165 |
| 9 | Naperville | $3,068 |
| 10 | Vernon Hills | $3,060 |
| 11 | Streamwood | $3,060 |
| 12 | Northbrook | $3,040 |
| 13 | Bartlett | $3,010 |
| 14 | Bolingbrook | $2,985 |
| 15 | Romeoville | $2,970 |
Nearby cities — 3-bedroom rent
Considering nearby alternatives? 5 of these cities have cheaper 3-bedroom rents than O Fallon.
| City | Distance | 3-Bedroom rent | vs O Fallon |
|---|---|---|---|
| Shiloh, IL | 6.1 mi | $1,590 | $-270 (-15%) |
| Fairview Heights, IL | 6.2 mi | $1,710 | $-150 (-8%) |
| Swansea, IL | 6.8 mi | $1,243 | $-617 (-33%) |
| Collinsville, IL | 7.4 mi | $1,460 | $-400 (-22%) |
| Troy, IL | 7.8 mi | $1,500 | $-360 (-19%) |
| Belleville, IL | 9.2 mi | $1,447 | $-413 (-22%) |
| Pontoon Beach, IL | 14.6 mi | $1,498 | $-362 (-19%) |
| Edwardsville, IL | 16 mi | $1,680 | $-180 (-10%) |
| Granite City, IL | 16.1 mi | $1,410 | $-450 (-24%) |
| Wood River, IL | 20.9 mi | $1,410 | $-450 (-24%) |
| Glasgow Village, MO | 22.5 mi | $1,232 | $-628 (-34%) |
| Saint Louis, MO | 22.6 mi | $1,605 | $-255 (-14%) |
3-Bedroom rent in O Fallon — common questions
How much is a 3-bedroom apartment in O Fallon?
As of July 2026, the median 3-bedroom apartment rent in O Fallon, Illinois is $1,860 per month. This is +16% higher than the citywide median of $1,599.
What income do you need to afford a 3-bedroom in O Fallon?
Using the standard 30% rent-to-income rule, you would need an annual income of about $74,400 ($6,200/month gross), which works out to roughly $35.77/hour at a full-time job.
Is O Fallon expensive for a 3-bedroom compared to the rest of the US?
O Fallon's 3-bedroom median of $1,860 is +13% below the national 3-bedroom median of $2,130. It ranks in the 36th percentile of US cities tracked.
How does O Fallon rank for 3-bedroom rent in Illinois?
Among the 142 cities in Illinois with 3-bedroom data, O Fallon ranks #47 from cheapest to most expensive.
Are there cheaper 3-bedroom options near O Fallon?
Yes — nearby cities with cheaper 3-bedroom rents include Shiloh ($1,590), Fairview Heights ($1,710), Swansea ($1,243).