Map of Adair CDP, Illinois

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.

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.

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.

Adair CDP overview:
Name:	Adair CDP
LSAD Code:	57
LSAD Description:	CDP (suffix)
State:	Illinois
County:	McDonough County
Elevation:	646 ft (197 m)
Total Area:	0.43 sq mi (1.11 km²)
Land Area:	0.43 sq mi (1.11 km²)
Water Area:	0.00 sq mi (0.00 km²)
Total Population:	212
Population Density:	493.02/sq mi (190.51/km²)
ZIP code:	61411
Area code:	309
FIPS code:	1700178
GNISfeature ID:	403339

Online Interactive Map

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Adair online map. Source: Basemap layers from Google Map, Open Street Map (OSM), Arcgisonline, Wmflabs. Boundary Data from Database of Global Administrative Areas.