'Effingham County, IL' definitions:

Effingham -- U.S. County in Illinois

From: Gazetteer 2000
Name :
Effingham -- U.S. County in Illinois
Population (2000) :
34264
Housing Units (2000) :
13959
Land area (2000) :
478.699578 sq. miles (1239.826162 sq. km)
Water area (2000) :
1.202802 sq. miles (3.115242 sq. km)
Total area (2000) :
479.902380 sq. miles (1242.941404 sq. km)
Located within :
Illinois (IL), FIPS 17
Location :
39.069653 N, 88.592280 W