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Jefferson County
USA
/
Illinois
/
Jefferson County
Belle Rive
Bluford
Bonnie
Dix
Ina
Mount Vernon
Nason
Waltonville
Woodlawn
Map of Illinois
DB-City :
Jefferson County
HASC
code :
US-IL-JF
FIPS
6-4 code :
17081
Capital :
Mount Vernon
Largest city :
Mount Vernon
Elevation :
High :
Dix
580 ft
Low :
Mount Vernon
0 ft
Population :
40,045
Land Area :
571 sq mi
(1,479 km²)
Density :
70.13/sq mi
(27.08/km²)
Time zone :
UTC
-6
United States City