Cortland Flag

Cortland

County:
DeKalb County
County Seat:
No
Area (mi²):
3.593
State:
Illinois

Cortland is a town located in DeKalb County, Illinois. Cortland has a 2026 population of 4,592. Cortland is currently growing at a rate of 2.04% annually and its population has increased by 4.46% since the most recent census, which recorded a population of 4,396 in 2020.

4.6K
Total Population
1,278
Density (mi²)
92 2.04%
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)