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Jefferson County, IN

Jefferson County, Indiana
Jefferson County Indiana Courthouse.jpg
Jefferson County Courthouse in Madison, Indiana
Map of Indiana highlighting Jefferson County
Location in the U.S. state of Indiana
Map of the United States highlighting Indiana
Indiana's location in the U.S.
Founded 1811
Named for Thomas Jefferson
Seat Madison
Largest city Madison
Area
 • Total 362.89 sq mi (940 km2)
 • Land 360.63 sq mi (934 km2)
 • Water 2.26 sq mi (6 km2), 0.62%
Population
 • (2017) 32,565
 • Density 90/sq mi (34.65/km2)
Congressional district 6th
Time zone Eastern: UTC−5/−4
Website jeffersoncounty.in.gov/index.php
Footnotes: Indiana county number 39
Madison, Indiana
Climate chart ()
J F M A M J J A S O N D
 
 
3.1
 
 
39
23
 
 
3
 
 
44
26
 
 
4.3
 
 
55
34
 
 
4.3
 
 
65
43
 
 
5
 
 
75
53
 
 
4.4
 
 
83
62
 
 
4.4
 
 
87
66
 
 
4.1
 
 
85
65
 
 
2.9
 
 
79
57
 
 
3.2
 
 
67
45
 
 
3.8
 
 
55
36
 
 
3.7
 
 
44
27
Average max. and min. temperatures in °F
Precipitation totals in inches
Source: The Weather Channel
J F M A M J J A S O N D
 
 
3.1
 
 
39
23
 
 
3
 
 
44
26
 
 
4.3
 
 
55
34
 
 
4.3
 
 
65
43
 
 
5
 
 
75
53
 
 
4.4
 
 
83
62
 
 
4.4
 
 
87
66
 
 
4.1
 
 
85
65
 
 
2.9
 
 
79
57
 
 
3.2
 
 
67
45
 
 
3.8
 
 
55
36
 
 
3.7
 
 
44
27
Average max. and min. temperatures in °F
Precipitation totals in inches
Source: The Weather Channel