O'Fallon, MO vs St. Charles, MO
Side-by-side fiscal comparison · U.S. Census Bureau data (2023)
St. Charles, MO outspends O'Fallon, MO by a wide margin per resident — $20,461 versus $6,570, a 211% difference. A gap this size usually reflects a structurally different service mix or accounting scope rather than a single line item.
O'Fallon, MO holds the stronger Fiscal Health Score, 71/100 (grade B) against 53/100 (grade C) for St. Charles, MO — a 18-point spread that puts the two in different grade territory.
St. Charles, MO reports no outstanding debt per resident in its Census filing, while O'Fallon, MO carries $234 per resident. Their budgets diverge on where the largest per-resident dollars go: O'Fallon, MO leads with parks and recreation at $992 per resident, while St. Charles, MO leads with police at $2,304.
On the revenue side both lean hardest on intergovernmental transfers — 100% of total revenue in O'Fallon, MO and 100% in St. Charles, MO.
Summary
St. Charles spends 67.9% more per capita than O'Fallon ($13,891/person difference). O'Fallon, MO has the stronger Fiscal Health Score (B, 71/100).
Fiscal Health Score
Key Metrics
Per Capita Spending by Department
Revenue Breakdown (Per Capita)
| Sales Tax | $393 | $1,291 |
| Income Tax | $655 | $0 |
| Intergovernmental | $13,053 | $6,270 |
| Charges & Fees | $862 | $0 |
| Other | $1,364 | $2,994 |
Spending Breakdown (Per Capita)
| Police | $0 | $2,304 |
| Fire Protection | $144 | $1,251 |
| Highways & Roads | $88 | $614 |
| Public Welfare | $724 | $4,187 |
| Hospitals | $40 | $1,602 |
| Parks & Recreation | $992 | $1,210 |
| Housing | $1,654 | $5,745 |
| Sewerage | $0 | $197 |
| Utilities | $1,130 | $254 |
| Other | $1,799 | $3,097 |
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Source: Census Annual Survey of State and Local Government Finances, 2026.