File:Lincoln_Illinois_Courthouse.jpg · Wikimedia Commons · See Wikimedia Commons
Logan County
Also known as Logan County, Illinois, Logan County, IL
county in Illinois, United States
Key facts
- Country
- United States
- State
- Illinois
- Founded
- February 15, 1839
- Named after
- John A. Logan
- Seat
- Lincoln
- Largest city
- Lincoln
- Total
- 619 sq mi (1,600 km )
- Land
- 618 sq mi (1,600 km )
- Water
- 0.9 sq mi (2.3 km ) 0.1%
- Estimate 2025
- 27,182
- Density
- 45.3/sq mi (17.5/km )
- Time zone
- UTC−6 ( Central )
- Summer dst
- UTC−5 ( CDT )
~7 min read
Article
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 Springfield-Jacksonville-Lincoln, IL Combined Statistical Area.