Sources & methodology
Where the information comes from.
We favor official local sources for civic information and clearly label third-party market data.
| Topic | Source | Use |
|---|---|---|
| City overview, downtown, Scott AFB proximity | City of O’Fallon | Local context and community features |
| Population | U.S. Census Bureau | 2025 population estimate |
| Housing values | Zillow | Typical home value and market context |
| Housing sales | Redfin | Recent median sale-price context |
| Family Sports Park | Enjoy Illinois / Sports Illinois | Park size and amenities |
Housing and cost information changes frequently. Production generator should timestamp and refresh these values rather than hard-code them indefinitely.