Sycamore Flag

Sycamore

County:
DeKalb County
County Seat:
No
Area (mi²):
10.122
State:
Illinois

Sycamore is a city located in DeKalb County, Illinois. Sycamore has a 2026 population of 18,968. Sycamore is currently growing at a rate of 0.7% annually and its population has increased by 1.57% since the most recent census, which recorded a population of 18,675 in 2020.

19K
Total Population
1,874
Density (mi²)
131 0.7%
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)