St. Charles, MO vs O'Fallon, 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: St. Charles, MO leads with police at $2,304 per resident, while O'Fallon, MO leads with parks and recreation at $992.
On the revenue side both lean hardest on intergovernmental transfers — 100% of total revenue in St. Charles, MO and 100% in O'Fallon, MO.
Summary
St. Charles spends 211.4% 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 | $1,291 | $393 |
| Income Tax | $0 | $655 |
| Intergovernmental | $6,270 | $13,053 |
| Charges & Fees | $0 | $862 |
| Other | $2,994 | $1,364 |
Spending Breakdown (Per Capita)
| Police | $2,304 | $0 |
| Fire Protection | $1,251 | $144 |
| Highways & Roads | $614 | $88 |
| Public Welfare | $4,187 | $724 |
| Hospitals | $1,602 | $40 |
| Parks & Recreation | $1,210 | $992 |
| Housing | $5,745 | $1,654 |
| Sewerage | $197 | $0 |
| Utilities | $254 | $1,130 |
| Other | $3,097 | $1,799 |
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Source: Census Annual Survey of State and Local Government Finances, 2026.