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Mason County, Illinois

Mason County, Illinois
Mason County Courthouse, Havana.jpg
Mason County Courthouse, Havana
Map of Illinois highlighting Mason County
Location in the U.S. state of Illinois
Map of the United States highlighting Illinois
Illinois's location in the U.S.
Founded 1841
Named for George Mason
Seat Havana
Largest city Havana
Area
 • Total 563 sq mi (1,458 km2)
 • Land 539 sq mi (1,396 km2)
 • Water 24 sq mi (62 km2), 4.3%
Population
 • (2010) 14,666
 • Density 27/sq mi (10/km²)
Congressional district 18th
Time zone Central: UTC-6/-5
Website www.masoncountyil.org
Havana, Illinois
Climate chart ()
J F M A M J J A S O N D
 
 
1.9
 
 
32
14
 
 
1.9
 
 
38
19
 
 
3
 
 
50
30
 
 
3.5
 
 
63
40
 
 
4.4
 
 
74
51
 
 
3.8
 
 
84
60
 
 
3.9
 
 
88
64
 
 
3.5
 
 
86
61
 
 
3.2
 
 
80
52
 
 
2.9
 
 
68
41
 
 
3.3
 
 
51
30
 
 
2.6
 
 
37
19
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
 
 
1.9
 
 
32
14
 
 
1.9
 
 
38
19
 
 
3
 
 
50
30
 
 
3.5
 
 
63
40
 
 
4.4
 
 
74
51
 
 
3.8
 
 
84
60
 
 
3.9
 
 
88
64
 
 
3.5
 
 
86
61
 
 
3.2
 
 
80
52
 
 
2.9
 
 
68
41
 
 
3.3
 
 
51
30
 
 
2.6
 
 
37
19
Average max. and min. temperatures in °F
Precipitation totals in inches
Source: The Weather Channel