jefferson county, il

from U.S. Gazetteer Counties (2000)

Jefferson -- U.S. County in Illinois
   Population (2000):    40045
   Housing Units (2000): 16990
   Land area (2000):     570.955719 sq. miles (1478.768461 sq. km)
   Water area (2000):    12.757198 sq. miles (33.040991 sq. km)
   Total area (2000):    583.712917 sq. miles (1511.809452 sq. km)
   Located within:       Illinois (IL), FIPS 17
   Location:             38.310378 N, 88.915252 W
   Headwords:
    Jefferson
    Jefferson, IL
    Jefferson County
    Jefferson County, IL