By Daniel Kelley, The Belleville News-Democrat
Filtering through Census data, Belleville News-Democrat discovered cities that experience huge daily growth as commuters arrive from bedroom communities.
For example, workers caused the population of Sauget to balloon 10 times its normal size, while the village of Shiloh sees its population drop more than 40 percent each weekday. The article details how the estimates help city leaders plan for emergencies and manage public safety.
This story was published with help from IRE's Total Newsroom Training