Map of Logan County, Illinois

Logan County is a county located in the U.S. state of Illinois. According to the 2020 census, it had a population of 27,987. Its county seat is Lincoln.

Logan County comprises the Lincoln, IL Micropolitan Statistical Area, which is included in the SpringfieldJacksonville-Lincoln, IL Combined Statistical Area.

Logan County overview:
Name:Logan County
FIPS code:17-107
Founded:February 15, 1839
Named for:John A. Logan
Largest city:Lincoln
Total Area:619 sq mi (1,600 km²)
Land Area:618 sq mi (1,600 km²)
Total Population:27,987
Population Density:45/sq mi (17/km²)
Time zone:UTC−6 (Central)
Summer Time Zone (DST):UTC−5 (CDT)

Logan County location map. Where is Logan County?

Logan County location on the U.S. Map. Where is Logan County.
Location of Logan County in the the United States.
Logan County location on the Illinois map. Where is Logan County.
Location of Logan County in Illinois.


Established in 1839, Logan County was named after physician and State Representative John Logan, father of Union General John Alexander Logan.[1]

Logan County Road Map

Logan CountyStreet Map.
Street map of Logan County, Illinois. Source: OpenStreetMap (OSM)
Logan CountyMap
Logan Countypolitical map.


According to the U.S. Census Bureau, the county has a total area of 619 square miles (1,600 km), of which 618 square miles (1,600 km) is land and 0.9 square miles (2.3 km) (0.1%) is water.

Climate and weather

In recent years, average temperatures in the county seat of Lincoln have ranged from a low of 15 °F (−9.4 °C) in January to a high of 86 °F (30 °C) in July, although a record low of −29 °F (−33.9 °C) was recorded in December 1914 and a record high of 113 °F (45 °C) was recorded in July 1936. Average monthly precipitation ranged from 1.55 inches (39.4 mm) in February to 4.42 inches (112.3 mm) in May.

Major highways

  • Interstate 55
  • Interstate 155
  • U.S. Highway 136
  • Illinois Route 10
  • Illinois Route 54
  • Illinois Route 121

Adjacent counties

Logan County Topographic Map

Topographic Map of Logan County, Illinois
Logan County Topo map.

Logan County Satellite Map

Satellite Map of Logan County, Illinois
Logan County satellite map.

Logan County Outline Map

Outline Map of Logan County, Illinois
Logan County outline map.

See also

Map of Illinois State and its subdivision: Map of other states:
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