Carroll County Map, Illinois

Written and Fact-checked by | Updated On: April 26, 2026 | 14:30 ET

Map of Carroll County - Carroll County is a county located in the U.S. state of Illinois. Carroll County Map showing cities, highways, important places and water bodies. Get Where is Carroll County located in the map, major cities in Carroll county, population, areas, and places of interest.

Carroll County Map, Illinois

Carroll County Map, Illinois

About Carroll County Map, Illinois: The map showing the county boundary, county seat, major cities, highways, water bodies and neighbouring counties.

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Carroll County, Illinois

Carroll County is a county located in the U.S. state of Illinois. It's county seat is Mount Carroll. As per 2020 census, the population of Carroll County is 15698 people and population density is square miles. According to the United States Census Bureau, the county has a total area of 445 sq mi (1,153 km2). Carroll County was established on 1839.

Facts about Carroll County, Illinois

CountryUnited States
StateIllinois
RegionNorthwestern Illinois
County SeatMount Carroll
Named AfterCharles Carroll of Carrollton
Established1839
Organized1839
Coordinates42.09° N, 89.93° W
Total Area~466 sq mi
Land Area~445 sq mi
Water Area~21 sq mi
Population (2020)~15,702
Population RankSmall-to-mid-sized county in Illinois
Largest CitySavanna
Main IndustriesAgriculture, Manufacturing, Tourism
Major RiverMississippi River
Time ZoneCentral Time (UTC−06:00)
Known ForMississippi River bluffs, rural scenery, historic Mount Carroll
Websitehttps://www.carroll-county.net

Ctities in Carroll county

City NameTypePopulation (2020)Pop. DensityAreaIncorporated
ChadwickVillage4811,546.6/sq mi (597.2/km2)0.311 sq mi (0.81 km2) 
LanarkCity1,5041,341.7/sq mi (518.0/km2)1.121 sq mi (2.9 km2) 
MilledgevilleVillage1,0261,487.0/sq mi (574.1/km2)0.69 sq mi (1.79 km2) 
Mount CarrollCity1,479738.4/sq mi (285.1/km2)2.003 sq mi (5.19 km2) 
SavannaCity2,7831,063.8/sq mi (410.8/km2)2.616 sq mi (6.78 km2) 
ShannonVillage8011,661.8/sq mi (641.6/km2)0.482 sq mi (1.25 km2) 
ThomsonVillage1,610725.6/sq mi (280.1/km2)2.219 sq mi (5.75 km2) 
Albany 759 74 sq mi1766
Bartlett 3,200 74.9 sq mi1790
Brookfield 755 22.9 sq mi1794
Chatham 341 56.7 sq mi1767
Conway 9,822 69.4 sq mi1765
Eaton 405 24.3 sq mi1766
Effingham 1,691 38.4 sq mi1778
Freedom 1,689 35 sq mi1831
Hart's Location 68 18.5 sq mi1795
Jackson 1,028 66.9 sq mi1800
Madison 2,565 38.5 sq mi1852
Moultonborough 4,918 59.5 sq mi1777
Ossipee 4,372 70.8 sq mi1785
Sandwich 1,466 90.2 sq mi1763
Tamworth 2,812 59.7 sq mi1766
Tuftonboro 2,467 41 sq mi1795
Wakefield 5,201 39.5 sq mi1774
Wolfeboro 6,416 47.9 sq mi1770

Roads and Highways in Carroll County, Illinois

Carroll County is connected by scenic highways that follow the Mississippi River and link it to nearby towns and regional destinations in northwestern Illinois.

  • U.S. Route 52 – runs east-west through the county, connecting Savanna to Freeport and the Quad Cities region
  • Illinois Route 84 – runs north-south along the Mississippi River, linking Savanna to Galena and Fulton
  • Illinois Route 78 – runs north-south, connecting Mount Carroll to Stockton and Prophetstown
  • Illinois Route 40 – passes through the county, linking Chadwick to Mount Carroll and further south

Neighboring Counties of Carroll County

  • Jo Daviess County (north)
  • Stephenson County (east)
  • Ogle County (southeast)
  • Whiteside County (south)
  • Clinton County, Iowa (west)

Top Attractions in Carroll County, Illinois

Carroll County offers beautiful river scenery, historic towns, and outdoor recreation along the Mississippi River.

  • Mississippi Palisades State Park – Known for its rugged cliffs, hiking trails, and scenic river views.
  • Savanna Historic District – Features charming buildings and riverfront views in a small-town setting.
  • Mount Carroll Historic District – A well-preserved downtown area with unique shops and historic architecture.
  • Timber Lake Playhouse – Illinois’ oldest professional summer theater with live performances.
  • Point Rock Park – Offers scenic overlooks of the Mississippi River and surrounding bluffs.
  • Carroll County Courthouse – A historic landmark located in Mount Carroll.
  • Great River Trail – A popular route for biking and walking along the Mississippi River.

Distance from Carroll County to Nearby Cities

  • Mount Carroll to Freeport – 30 mi (48 km)
  • Mount Carroll to Rockford – 65 mi (105 km)
  • Mount Carroll to Davenport – 60 mi (97 km)
  • Mount Carroll to Chicago – 150 mi (241 km)
  • Mount Carroll to Dubuque – 55 mi (89 km)

FAQs about Carroll County

Where is Carroll County located?

Carroll County is located in northwestern Illinois along the Mississippi River, near the borders of Iowa and Wisconsin.

What is Carroll County known for?

The county is known for its scenic river bluffs, state parks, and historic small towns.

What is the county seat of Carroll County?

Mount Carroll is the county seat and a historic center of the county.

Are there outdoor activities in Carroll County?

Yes, visitors can enjoy hiking, biking, and scenic views at parks and along the Mississippi River.

How can I reach Carroll County?

Carroll County is accessible via U.S. Route 52 and several Illinois state highways including Routes 78, 84, and 40.