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Alexander County, Illinois
County in Illinois, United States / From Wikipedia, the free encyclopedia
Alexander County is the southernmost and southwesternmost county in the U.S. state of Illinois. As of the 2020 census, the population was 5,240.[1] Its county seat is Cairo[2] and its western boundary is formed by the Mississippi River.
Quick Facts Country, State ...
Alexander County | |
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![]() Alexander County Courthouse in Cairo | |
![]() Location within the U.S. state of Illinois | |
![]() Illinois's location within the U.S. | |
Coordinates: 37°11′N 89°20′W | |
Country | ![]() |
State | ![]() |
Founded | 1819 |
Named for | William M. Alexander |
Seat | Cairo |
Largest city | Cairo |
Area | |
• Total | 253 sq mi (660 km2) |
• Land | 236 sq mi (610 km2) |
• Water | 17 sq mi (40 km2) 6.8% |
Population (2020) | |
• Total | 5,240 |
• Estimate (2023) | 4,695 |
• Density | 21/sq mi (8.0/km2) |
Time zone | UTC−6 (Central) |
• Summer (DST) | UTC−5 (CDT) |
Congressional district | 12th |
Website | www |
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Alexander County is part of the Cape Girardeau, MO-IL Metropolitan Statistical Area which is made up of jurisdictions on both sides of the Mississippi River.