Carroll County

US States / H-L / Illinois / Carroll County

Carroll County is named for Charles Carroll, who was a signer of the Declaration of Independence and who resided in Carrollton.


Surrounding County Courthouses: 

N – Jo Daviess County and Stephenson County

E – Ogle County

S – Whiteside County

W – Clinton County, Iowa and Jackson County, Iowa 


Created:  February 22, 1839                                                      Map of Illinois highlighting Carroll County

County Seat:

Savanna         1839 – 1843

Mount Carroll  1843 – present


County Courthouse – Mount Carroll


Location:  301 North Main Street / East Market Street

Built:  1855 – 1858

Style:  Italianate

Architect:  William B Olmsted and Peter A  Nicholson of Chicago

Contractor:  Locan labor


Description: The building faces west and is a two story red colored brick and stone structure. The building is located on landscaped grounds in the center of Mount Carroll on the north side of the Courthouse Complex. The building has a course limestone base and the upper windows are arched. Built in 1958, the middle building has a large portico on the west front supported by four large white columns. Built in 1895, the south building is a two story red colored brick structure with arched entrance topped by a slanted stone roof. The base of the building is course stone. Horizontal bands of light stone divide the floors and edge the windows.


Note:  The courthouse was repaired and completed in 1858 to 1860 by William T Miller and Jacob P Emmert with stone mason James Watson and brick layers James Hallet and B H Hallet.


History:  The county was created in 1839 and Savanna was selected as the county seat. In 1843, the county seat was moved to Mount Carroll. The county rented premises until the first and present courthouse was constructed in 1856 to 1860 at a cost of $30,500.




County Courthouse – north section – Mount Caroll










County Courthouse – middle section




County Courthouse – south section










Photos taken 2007