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County Detail
Carroll County
County Seat:
Mount Carroll
Previous Seats:
Savanna, 1839; Mount Carroll, 1844
Area:
468 square miles
Population:
1,023 (1840 Census) - 15,387 (2010 Census)
Named for:
John Carroll of Carrollton, Signer of Declaration of Independence
Created on:
February 22, 1839
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