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The Adair CDP⁽¹⁾ had a population of 215 as of 2020-2024 American Community Survey 5-Year Estimates.

The primary coordinate point for Adair is located at latitude 40.4189 and longitude -90.4968 in McDonough County. The formal boundaries for the Adair Census Designated Place 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 Adair Census Designated Place 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.

A Census Designated Place (CDP) is a statistical counterpart to a self-governing (incorporated) place such as a city, town, or village. A CDP is not a legal entity and has no governmental functions.

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Adair Demographic Data
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Adair, IL Data & Demographics

Source: 2020-2024 American Community Survey 5-Year Estimates

POPULATION
Total Population	215 (100%)
Population Density	500 per sq mi
Diversity Index¹	26


INCOME
Median Household Income	$0
Per Capita Income	$18,800
Median Home Value	$90,000

HOUSING
Total HU (Housing Units)	125 (100%)
Owner Occupied HU	42 (33.6%)
Renter Occupied HU	63 (50.4%)
Vacant Housing Units	20 (16.0%)

HOUSEHOLDS
Total Households	105
Average Household Size	2.05
Family Households	42 (40.0%)

NOTES

The Diversity Index estimates the likelihood that two persons chosen at random from the same area belong to different race or ethnic groups, based on five groups: Hispanic/Latino, Non-Hispanic White, Non-Hispanic Black, Non-Hispanic Asian, and Non-Hispanic Other/Multiracial. A value of 0 indicates the population belongs entirely to one group. Higher values indicate a more evenly mixed population. Calculated from U.S. Census Bureau ACS 5-year estimates (table B03002).

Adair, IL - Peer Comparisons by Rank and Percentile

The table below compares Adair to the other 1,461 incorporated cities, towns and CDPs in Illinois by rank and percentile using 2020-2024 American Community Survey 5-Year Estimates 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	# 1187	19th
Population Density	# 1074	27th
Median Household Income	# 1461	1st
Per Capita Income	# 1429	2nd
Diversity Index	# 537	63rd

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

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Adair, IL Profile: Facts & Data

Adair, Illinois - Basic Facts

Adair, IL Data & Demographics

POPULATION

INCOME

HOUSING

HOUSEHOLDS

Adair, IL - Peer Comparisons by Rank and Percentile

Adair, IL - Most Popular Things to Do

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