| Index | O'Fallon | Missouri | National |
| Cost of living | 105 | 90 | 100 |
| Groceries | 95 | 96 | 100 |
| Health care | 98 | 97 | 100 |
| Housing | 127 | 77 | 100 |
| Transportation | 93 | 96 | 100 |
| Utilities | 92 | 95 | 100 |
| Lifestyle & Entertainment | 98 | 95 | 100 |
| Household Items | 99 | 97 | 100 |
| Education & Childcare | 99 | 95 | 100 |
Knowing the cost of living in O'Fallon allows individuals to create a realistic budget. This helps them understand how their income will cover expenses and whether they need to make financial adjustments. The cost of living in any region can fluctuate due to various factors. To assess the cost of living consistently across different areas, a national average of 100 serves as the basis for the cost of living index. The cost of living in O'Fallon stands at 105, marking it 5% higher than the national average.
Everyday expenditures like food, housing, lifestyle expenses, transportation and health care in O'Fallon are priced in a manner consistent with other areas. This means that residents of O'Fallon can anticipate their daily expenses remaining reasonably similar to those in an average city, thereby supporting a manageable cost of living.
Housing costs are a major factor in the O'Fallon cost of living index, and they often eat up a big chunk of your take-home pay. Unfortunately, in this area, housing expenses for both homeownership and rentals were 26.6% higher than what's typical in an average city. That includes the prices of homes and rents, as well as mortgage rates and insurance.
Locals have the inside scoop on their city. So, we polled 8 residents in O'Fallon to learn how they view the cost of living. We asked how they felt about the cost of living in their area, and if they thought that prices were increasing, decreasing or staying the same. The verdict? 38% find it reasonable with decreasing prices, but 63% think it's quite pricey, with prices that continue to rise.
Wondering if O'Fallon is affordable? It's a question that often comes up when you're thinking about a new city since affordability can really shape your decisions. The cost of living index (covered earlier), housing expenses and income levels all play a part in the affordability equation. In O'Fallon, for example, the median home price is 29% higher than what folks pay nationally, and monthly rent is 21.1% higher than the usual rates. Plus, income levels matter too, with O'Fallon boasting a median household income of $137,452, which is 69% higher than the national average.
Urbanization: Larger, urban centers, known for their wealth of amenities and strong employment prospects, often exhibit an elevated cost of living, primarily attributable to the heightened demand for services and residential relocation. Consequently, this scenario leads to elevated home prices and higher rental rates. In contrast, sparsely populated rural areas or regions characterized by diminished demand typically provide a more limited array of amenities and experience slower job market growth, resulting in a more affordable cost of living.
Subsidies: Some cities and states may extend government subsidies or aid programs aimed at reducing the cost of living for their residents. These initiatives encompass diverse forms of support, including Medicare, Medicaid, housing subsidies, low-income home energy assistance programs, school lunch programs, supplemental nutrition assistance programs, student loans, electric vehicle tax credits, affordable care act subsidies and farm subsidies. Regions with limited subsidy provisions may witness an increase in their overall cost of living.
Housing: High demand for housing in desirable locations can drive up property prices and rental rates. This can be a primary contributor to a higher cost of living. While low demand for housing, especially in undesirable locations, can have the reverse effect and drive prices down, resulting in a lower cost of living. The housing index in O'Fallon, is 26.6% higher than the national average.
The cost of living estimates displayed for O'Fallon are modeled using a U.S. average baseline of 100, helping provide a useful comparison of local living expenses. Housing calculations include U.S. Census home price and rental data, while all other values are AI-assisted estimates based on regional cost patterns, climate, transportation, and everyday spending expectations. These values are intended for directional comparisons across cities.
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| Median Income | Per Year | Per Month | Max Budget (28% DTI) | Max Budget (36% DTI) |
| Owners | $154,147 | $12,846 | $3,597 | $4,625 |
| Renters | $77,689 | $6,474 | $1,813 | $2,331 |
| State | General Sales Tax | With Max Surtax |
| Missouri | 4.225% | 10.85% |
| State | Income Tax (Low) | Income Tax (High) |
| Missouri | 2% | 4.95% |
| City | Population | Cost of Living Index | National Avg. |
| Defiance, MO | 70 | 96 | 4.3% |
| Champ, MO | 3 | 96 | 4.1% |
| Fountain N' Lakes, MO | 241 | 82 | 18.1% |
| Brussels, IL | 117 | 82 | 17.9% |
| Winfield, MO | 2,007 | 88 | 11.9% |
| O'Fallon, MO | 90,020 | 105 | 5.1% |
| City | Population | Cost of Living Index | National Avg. |
| Newport Beach, CA | 90,043 | 337 | 237.4% |
| Waukegan, IL | 90,063 | 96 | 4.1% |
| Citrus Heights, CA | 90,373 | 132 | 32.0% |
| Ogden, UT | 90,520 | 101 | 1.5% |
| Peterborough, ON | 89,500 | n/a | |
| O'Fallon, MO | 90,020 | 105 | 5.1% |
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