Rock Falls Flag

Rock Falls

County Seat:
No
Area (mi²):
3.983
State:
Illinois

Rock Falls is a city located in Whiteside County, Illinois. Rock Falls has a 2026 population of 8,614. Rock Falls is currently growing at a rate of 0.01% annually but its population has decreased by -1.79% since the most recent census, which recorded a population of 8,771 in 2020.

8.6K
Total Population
2,163
Density (mi²)
1 0.01%
Growth

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)