Adair, IL Profile: Facts, Map & Data


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Adair, Illinois - Basic Facts

The Adair Census Designated Place had a population of 220 as of July 1, 2016. Adair ranks in the lower quartile for Population Density and Diversity Index when compared to the other cities, towns and Census Designated Places (CDPs) in Illinois. See peer rankings below.

The primary coordinate point for Adair is located at latitude 40.4183 and longitude -90.4974 in McDonough County. The formal boundaries for the Adair Census Designated Place (see map below) encompass a land area of 0.43 sq. miles and a water area of 0 sq. miles. McDonough County is in the Central time zone (GMT -6). The elevation is 646 feet.

The Adair Census Designated Place (GNIS ID: 2628541) has a U1 Census Class Code which indicates a census designated place with an official federally recognized name. It also has a Functional Status Code of "S" which identifies a statistical entity.

The Adair Census Designated Place is located within Township of New Salem, a minor civil division (MCD) of McDonough County.

Beneath the boundary map are tables with Adair population, income and housing data, five-year growth projections and peer comparisons for key demographic data. The estimates are for July 1, 2016.

Alternate Unofficial Names for Adair: Reedyville.

Neighborhood Data

Address Based Hyperlocal Data Input an address and get data & demographics for the pertinent census block group (CBG), a searchable map and a customized directory. The CBG is the smallest geographical unit used by the Census Bureau for reporting certain data.


Adair Census Designated Place, IL Boundary Map

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Boundary Maps: Township of New Salem | McDonough County | Illinois Counties

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Adair, IL Data & Demographics (As of July 1, 2016)


Total Population 220
Population in Households 220
Population in Familes 188
Population in Group Qrtrs 0
Population Density1 512
Diversity Index2 6


Total Households 92
Average Household Size 2.39
Family Households 71
Average Family Size 3


Total Housing Units 96 (100%)
Owner Occupied HU 74 (77.1%)
Renter Occupied HU 18 (18.7%)
Vacant Housing Units 4 ( 4.2%)
Median Home Value $98,810
Average Home Value $123,630


Median Household Income $53,907
Average Household Income $67,242
Per Capita Income $27,335
  (Compound Annual Growth Rates)


2010-2015 2015-2020
Population 0.75% 0.18%
Households 0.53% 0.22%
Families 0.46% 0.0%
Median Household Income   1.71%
Per Capita Income   2.23%
1) Population Density = Total Population per square mile.
2) The Diversity Index is a scale of 0 to 100 that represents the likelyhood that two persons, chosen at random from the same area, belong to different race or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.
Based on Census 2010 counts, the Diversity Index for the United States was 60.6 and it is expected to increase to 64.8 by July 1, 2018.

Adair, IL - Peer Comparisons by Rank and Percentile

The table below compares Adair to the other 1,368 incorporated cities, towns and CDPs in Illinois by rank and percentile using July 1, 2016 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 1188 13th
Population Density1 # 1074 22nd
Diversity Index2 # 1139 17th
Median Household Income # 616 55th
Per Capita Income # 535 61st

Additional comparisons and rankings can be made with a VERY EASY TO USE Illinois Census Data Comparison Tool.