'Carroll County, IL' definitions:

Carroll -- U.S. County in Illinois

From: Gazetteer 2000
Name :
Carroll -- U.S. County in Illinois
Population (2000) :
16674
Housing Units (2000) :
7945
Land area (2000) :
444.212086 sq. miles (1150.503971 sq. km)
Water area (2000) :
21.556197 sq. miles (55.830292 sq. km)
Total area (2000) :
465.768283 sq. miles (1206.334263 sq. km)
Located within :
Illinois (IL), FIPS 17
Location :
42.076584 N, 89.953145 W