'Adams County, IL' definitions:
Adams -- U.S. County in Illinois
From: Gazetteer 2000
Name :
Adams -- U.S. County in Illinois
Population (2000) :
68277
Housing Units (2000) :
29386
Land area (2000) :
856.634133 sq. miles (2218.672126 sq. km)
Water area (2000) :
14.642815 sq. miles (37.924714 sq. km)
Total area (2000) :
871.276948 sq. miles (2256.596840 sq. km)
Located within :
Illinois (IL), FIPS 17
Location :
39.965452 N, 91.268051 W