Piatt
County Fact Sheet
Addresses for County
Courthouse and IRAD:
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Piatt County Courthouse
101 West Washington Street
P.O. Box 558
Monticello, IL 61856
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County Clerk
Circuit Clerk
Recorder
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(217) 762-9487
(217) 762-4966
(217) 762-9487
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Illinois Regional Archives Depository
Illinois State University
2016 Warehouse Road
Campus Box 1520
Normal, IL 61790-1520
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- Telephone:
(309) 452-6027
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| Established: |
January 27, 1841 (Laws, 1841, p. 71) |
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Origin of the name
of the county: |
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Named for James A. Piatt, Sr., who
settled in area of the present county in 1829, coming from Indiana. |
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Present area, or
parts of it, formerly included in: |
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1839–1841 |
DeWitt |
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1831–1841 |
Macon |
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1831–1839 |
McLean |
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1827–1831 |
Shelby |
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1821–1827 |
Fayette |
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1819–1821 |
Clark |
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1816–1819 |
Crawford |
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1815–1816 |
Edwards |
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1812–1815 |
Madison |
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1801–1812 |
St. Clair |
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1790–1801 |
Knox, Northwest Territory |
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| County
Seats: |
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1841–1842 |
Monticello—Temporary designation. |
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1842– |
Monticello—Permanent designation. |
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History of county
governing board: |
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1841–1849 |
County Commissioners’ Court |
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1849–1860 |
County Court |
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1860– |
County Board of Supervisors |
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Township
Government |
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Adopted: |
November 8, 1859 |
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| Township
Names: |
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Bement |
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Blue Ridge |
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Cerro Gordo |
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Goose Creek |
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Monticello |
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Sangamon |
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Unity |
Name changed from Douglas (date unknown, probably 1860). |
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Willow Branch |
Name changed from Liberty (date unknown, probably 1860). |
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