'Woodford County, IL' definitions:

Woodford -- U.S. County in Illinois

From: Gazetteer 2000
Name :
Woodford -- U.S. County in Illinois
Population (2000) :
35469
Housing Units (2000) :
13487
Land area (2000) :
527.950273 sq. miles (1367.384872 sq. km)
Water area (2000) :
14.794278 sq. miles (38.317003 sq. km)
Total area (2000) :
542.744551 sq. miles (1405.701875 sq. km)
Located within :
Illinois (IL), FIPS 17
Location :
40.783629 N, 89.225144 W