Coles County
| Coles County, Illinois | |
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Coles County Courthouse
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 Location in the U.S. state of Illinois |
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 Illinois's location in the U.S. |
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| Founded | December 25, 1830 |
| Named for | Edward Coles |
| Seat | Charleston |
| Largest city | Mattoon |
| Area | |
| • Total | 510 sq mi (1,321 km2) |
| • Land | 508 sq mi (1,316 km2) |
| • Water | 1.8 sq mi (5 km2), 0.4% |
| Population | |
| • (2010) | 53,873 |
| • Density | 106/sq mi (41/km²) |
| Congressional district | 15th |
| Time zone | Central: UTC-6/-5 |
| Website | www |
| Charleston, Illinois | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Climate chart () | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| J | F | M | A | M | J | J | A | S | O | N | D |
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2.2
35
19
|
2.4
41
24
|
3.4
53
33
|
4
65
43
|
4.2
75
52
|
3.9
85
61
|
4.7
88
65
|
3.5
86
63
|
3.2
79
56
|
3.3
68
45
|
3.9
53
34
|
3.2
40
24
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| Average max. and min. temperatures in °F | |||||||||||
| Precipitation totals in inches | |||||||||||
| Source: The Weather Channel | |||||||||||
| Metric conversion | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| J | F | M | A | M | J | J | A | S | O | N | D |
|
56
2
−7
|
61
5
−4
|
85
12
1
|
101
18
6
|
107
24
11
|
100
29
16
|
118
31
18
|
88
30
17
|
81
26
13
|
83
20
7
|
98
12
1
|
82
...
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