Explore the peaceful majesty of Northwest Illinois outdoors and find inspiration and comfort in the unforgettable experiences that await., Mount Carroll’s 2025 Fourth of July celebration is scheduled for Friday, July 4, with events… Savanna’s Fourth of July celebration will take place Saturday, July 5. MOUNT CARROLL—Illinois Road Scholar speaker Aaron Lawler, PhD will present "Learning is Your… By MIKE NESTER., Carroll County is a county located in the state of Illinois. Based on the 2010 census, the population was 15,387. Carroll County was created on February 22, 1839. The county seat is Mount Carroll. The county is named for Charles Carroll of Carrollton (1737-1832), signed the Declaration of Independence on behalf of Maryland., Carroll County hugs the Mississippi River in northwest Illinois. Mount Carroll is the county seat, which is a town with Victorian architecture. Rolling hills and limestone bluffs define the landscape. The county is known for its scenic beauty. Savanna Army Depot turned into a nature preserve., ***VALUES REPORTED ON WEBSITE ARE NOT ACCURATE, PLEASE CONTACT THE CARROLL COUNTY ASSESSMENT OFFICE TO VERIFY VALUES*** To use the limited free verision of the site, continue to Real Estate Search without a login and password., There’s so much to see and do on your Carroll County getaway. From fun mini golf to lovely vineyards to amazing theater, you’ll find plenty of unique attractions around our communities to keep you busy throughout your stay..