Illinois Census & Demographic Data - July 1, 2024

Illinois Census Data

The tables below provide updated data and demographic estimates for Illinois as of July 1, 2024. Our Illinois Census Data Comparison Tool allows you to compare and rank IL cities, towns, ZIP Codes and Counties.

Illinois Data & Demographics (As of July 1, 2024)

POPULATION
Total Population	12,544,951 (100%)
Population in Households	12,269,711 (97.8%)
Population in Families	9,749,565 (77.7%)
Population in Group Quarters¹	275,240 ( 2.2%)
Population Density	226
Diversity Index²	72


INCOME
Median Household Income	$81,015
Average Household Income	$114,640
% of Income for Mortgage⁴	21%
Per Capita Income	$45,843
Wealth Index⁵	100
Socioeconomic Status Index⁶	Moderate (48.6)

HOUSING
Total HU (Housing Units)	5,482,242 (100%)
Owner Occupied HU	3,308,496 (60.3%)
Renter Occupied HU	1,698,839 (31.0%)
Vacant Housing Units	474,907 ( 8.7%)
Median Home Value	$274,127
Average Home Value	$330,342
Housing Affordability Index³	101

HOUSEHOLDS
Total Households	5,007,335
Average Household Size	2.45
Family Households	3,108,596
Average Family Size	3.00

NOTES

Group Quarters - a place where people live or stay in a group living arrangement. Includes college residents halls, nursing facilities, military barracks, and correctional facilities.
The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different races 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.
The Housing Affordability Index base is 100 and represents a balance point where a resident with a median household income can normally qualify to purchase a median price home. Values above 100 indicate increased affordability, while values below 100 indicate decreased affordability.
The % of Income for Mortgage quantifies the percentage of median household income dedicated to mortgage payments on a home priced at the median value (assuming a 30-year mortgage and a 20% down payment).
The Wealth Index is based on a number of indicators of affluence including average household income and average net worth, but it also includes the value of material possessions and resources. It represents the wealth of the area relative to the national level. Values above or below 100 represent above-average wealth or below-average wealth compared to the national level.
The Socioeconomic Index ranges from zero (lowest relative status) to 100 (highest relative status). This measure quantifies disparities in social position of an area's inhabitants and is built from a broad range of demographic, housing, and socioeconomic inputs. More information on this measure can be found in Esri's SEI tutorial.

GROWTH RATE / YEAR	2020-2024	2024-2029
Population	-0.50%	-0.38%
Households	0.04%	0.18%
Families		0.05%
Median Household Income		2.70%
Per Capita Income		3.23%
Owner Occupied HU		0.65%

Illinois Census & Demographic Data - July 1, 2024

Illinois Census Data

Illinois Data & Demographics (As of July 1, 2024)

POPULATION

INCOME

HOUSING

HOUSEHOLDS

GROWTH RATE / YEAR

Illinois