Thursday, October 22 Illinois
Towns Advertise
What to do in Illinois
Search Log in Add your business Ask a question
  1. Home
  2. Statistics
  3. People
  4. Population density
People Statistics · Region

Population density in Illinois

1990 – 2025 · 36 data points 14 of 51 · Regions of United States Updated Oct 22, 2026
People · Illinois United States

Source: OECD Regional Database, 1990 – 2025

Featured spot available Your business could be here First in “Statistics” — with a photo and a “Featured” mark. Take this spot
Overview 6 figures People 18 figures Economy 20 figures Housing 8 figures Education 10 figures Tourism 3 figures Climate 3 figures
Latest value · 2025 88.4per km² +0.1% since 2024
Regions of United States · 2025 14 of 51 Place 1 is the highest value.
since 2015 −1.1% +0.3% a year on average
vs United States +137% United States: 37.3 · 2025
Population density, 1990 – 2025 per km² · Illinois · United States · World
−1.1% since 2015
Illinois United States World

Sources: OECD Regional Database · World Bank — World Development Indicators, 1990 – 2025

Compared with Population density · per km²
Illinois
88.4
United States
37.3
World
62.1 · 2023

Sources: OECD Regional Database · World Bank — World Development Indicators

The series at a glance Illinois · 1990 – 2025
Latest value 88.4 · 2025
First value 79.6 · 1990
Highest 89.6 · 2013
Lowest 79.6 · 1990
Average change +0.3% a year on average
Data points 36

By year

All years · 1990 – 2025

YearIllinoisChange United StatesWorld
2025 88.4 +0.1% 37.3 —
2024 88.3 +0.5% 37.1 —
2023 87.8 +0.2% 36.8 62.1
2022 87.7 −0.6% 36.5 61.6
2021 88.2 −0.8% 36.2 61.0
2020 88.9 +1.0% 36.2 60.4
2019 88.0 −0.4% 35.8 59.8
2018 88.4 −0.4% 35.7 59.2
2017 88.8 −0.3% 35.5 58.6
2016 89.1 −0.3% 35.2 57.9
2015 89.3 −0.2% 35.0 57.3
2014 89.5 −0.1% 34.7 56.6
2013 89.6 +0.1% 34.5 55.9
2012 89.5 +0.1% 34.2 55.2
2011 89.4 +0.2% 34.0 55.6
2010 89.2 +0.3% 33.8 54.9
2009 88.9 +0.4% 33.5 54.3
2008 88.6 +0.4% 33.2 53.6
2007 88.2 +0.4% 32.9 52.9
2006 87.8 +0.3% 32.6 52.3
2005 87.6 +0.2% 32.2 51.6
2004 87.4 +0.3% 32.0 51.0
2003 87.2 +0.2% 31.7 50.4
2002 87.0 +0.3% 31.4 49.7
2001 86.8 +0.4% 31.1 49.1
2000 86.4 +0.6% 30.8 48.4
1999 85.8 +0.7% 30.5 47.8
1998 85.2 +0.7% 30.1 47.2
1997 84.6 +0.7% 29.8 46.5
1996 84.1 +0.8% 29.4 45.8
1995 83.4 +0.8% 29.1 45.1
1994 82.8 +0.9% 28.7 44.5
1993 82.0 +1.0% 28.4 43.8
1992 81.2 +1.1% 28.0 43.5
1991 80.4 +1.0% 27.6 51.7
1990 79.6 27.2 50.8

Sources: OECD Regional Database · World Bank — World Development Indicators, 1990 – 2025

Ranking · Regions of United States

2014 · Place 1 is the highest value.

Year: 2025 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014
Highest first Lowest first A–Z
#TerritoryPopulation density
28 Alabama 36.8
51 Alaska 0.5
34 Arizona 22.9
35 Arkansas 22.0
12 California 95.6
38 Colorado 19.9
5 Connecticut 286
7 Delaware 184
1 District of Columbia 4,166
9 Florida 142
19 Georgia 67.1
14 Hawaii 85.0
45 Idaho 7.6
13 Illinois 89.5
17 Indiana 71.0
37 Iowa 21.5
42 Kansas 13.7
23 Kentucky 42.9
24 Louisiana 41.2
39 Maine 16.6
6 Maryland 235
4 Massachusetts 333
18 Michigan 67.5
31 Minnesota 26.4
33 Mississippi 24.6
29 Missouri 33.9
49 Montana 2.7
44 Nebraska 9.4
43 Nevada 9.9
22 New Hampshire 57.4
2 New Jersey 461
46 New Mexico 6.6
8 New York 161
16 North Carolina 78.7
48 North Dakota 4.1
11 Ohio 109
36 Oklahoma 21.8
40 Oregon 15.9
10 Pennsylvania 110
3 Rhode Island 390
20 South Carolina 61.8
47 South Dakota 4.3
21 Tennessee 61.3
27 Texas 39.8
41 Utah 13.8
32 Vermont 26.1
15 Virginia 81.0
25 Washington 40.9
30 West Virginia 29.7
26 Wisconsin 40.9
50 Wyoming 2.3

Source: OECD Regional Database, 2014

What it means

How crowded a place is: residents per square kilometre.

How it is calculated

Residents divided by land area in square kilometres.