Adair, Illinois

Census-designated place in Illinois, United States

Adair, Illinois Reedyville
Census-designated place
40°25′08″N 90°29′48″W / 40.41889°N 90.49667°W / 40.41889; -90.49667
Country	United States
State	Illinois
County	McDonough
Township	New Salem
Area ^[1]
• Total	0.43 sq mi (1.11 km²)
• Land	0.43 sq mi (1.11 km²)
• Water	0.00 sq mi (0.00 km²)
Elevation	646 ft (197 m)
Population (2020)^[2]
• Total	212
• Density	493.02/sq mi (190.51/km²)
Time zone	UTC-6 (Central (CST))
• Summer (DST)	UTC-5 (CDT)
ZIP code	61411
Area code	309
GNIS feature ID	403339^[3]

Adair is an unincorporated community and census-designated place (CDP) in McDonough County, Illinois, United States. It is part of New Salem Township. As of the 2020 census, Adair had a population of 212.^[2]

Adair was laid out in August 1870 under the name of "Reedyville"; though the name has never been officially changed, the location is known as Adair because that name was given to the post office.^[4]

Adair is in eastern McDonough County, along U.S. Route 136 (Main Street). US 136 leads northwest 11 miles (18 km) to Macomb, the county seat, and southeast 28 miles (45 km) to Havana. The Burlington Northern Santa Fe Railway runs through the east side of Adair.

Demographics

Historical population
Census	Pop.	%±
2010	210	—
2020	212	1.0%
U.S. Decennial Census^[5]

References

^ "2022 U.S. Gazetteer Files: Illinois". United States Census Bureau. Retrieved March 6, 2023.
^ ^a ^b "P1. Race – Adair CDP, Illinois: 2020 DEC Redistricting Data (PL 94-171)". U.S. Census Bureau. Retrieved March 6, 2023.
^ U.S. Geological Survey Geographic Names Information System: Adair, Illinois
^ McDonough County, Illinois Genealogy - Adair Archived March 28, 2006, at the Wayback Machine
^ "Census of Population and Housing". Census.gov. Retrieved June 4, 2016.