| Information by State |
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| US Counties
| Illinois
| McDonough
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| Find a Lawyer in McDonough County: |
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| McDonough County, Illinois (IL) |
| Address: |
County Courthouse |
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One Courthouse Square |
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Macomb, Illinois 61455-2200 |
| County Seat: |
Macomb |
| Phone: |
309-837-2308 |
| Fax: |
309-836-3368 |
| Website: |
mcg.mcdonough.il.us |
| Established: |
1826 |
| Area: |
589 sq mi |
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| McDonough County, Illinois Communities: |
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| Total Communities in McDonough County, Illinois: 17 |
| Population: |
| 31,430 |
30,875 |
30,323 |
29,955 |
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| 2015 * |
2016 * |
2017 * |
2018 * |
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| 32,612 |
32,511 |
32,550 |
32,246 |
31,792 |
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| 2010 |
2011 * |
2012 * |
2013 * |
2014 * |
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| * (U.S. Census Estimate) |
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