The Cortland township is a subdivision of the DeKalb County, in the state of Illinois.
This subdivision represents an area of 36 square miles - 1 square miles are water areas.
There are 4 cities, towns or villages in the Cortland township subdivision - their combined population count is 9.952.
Approximatelly 1.016 people live in “Remainders” areas, that are officially not part of any city or town.
Total population of the subdivision is 10.968.
Racial makeup of this subdivision is as follows : White (90.46%),
followed by Black or African American (3.25%) and Some Other Race (2.6%).
Median age for the male population is 33 and 35 for the female part.
Statistical data for the Cortland township based on the 2010 U.S. Census