Logan County, Illinois

Logan County
Logan County Courthouse
Logan County Courthouse
Map of Illinois highlighting Logan County
Location within the U.S. state of Illinois
Map of the United States highlighting Illinois
Illinois's location within the U.S.
Coordinates: 40°08′N 89°22′W / 40.13°N 89.36°W / 40.13; -89.36
Country United States
State Illinois
FoundedFebruary 15, 1839
Named forJohn A. Logan
SeatLincoln
Largest cityLincoln
Area
 • Total619 sq mi (1,600 km2)
 • Land618 sq mi (1,600 km2)
 • Water0.9 sq mi (2 km2)  0.1%
Population
 (2020)
 • Total27,987
 • Estimate 
(2021)
27,992
 • Density45/sq mi (17/km2)
Time zoneUTC−6 (Central)
 • Summer (DST)UTC−5 (CDT)
Congressional district15th
Websitelogancountyil.gov/index.php?lang=en

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.[1] Its county seat is Lincoln.[2]

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

  1. ^ "QuickFacts". United States Census Bureau. Retrieved January 23, 2023.
  2. ^ "Find a County". National Association of Counties. Retrieved June 7, 2011.

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