Wednesday, October 21 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 21, 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

2024 · 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
51 Alaska 0.5
50 Wyoming 2.3
49 Montana 3.0
48 North Dakota 4.5
47 South Dakota 4.7
46 New Mexico 6.8
45 Idaho 9.3
44 Nebraska 10.1
43 Nevada 11.5
42 Kansas 14.0
41 Utah 16.5
40 Oregon 17.2
39 Maine 17.6
38 Colorado 22.2
37 Iowa 22.4
36 Arkansas 22.9
35 Oklahoma 23.0
34 Mississippi 24.2
33 Arizona 25.8
32 Vermont 27.1
31 Minnesota 28.1
30 West Virginia 28.4
29 Missouri 35.0
28 Alabama 39.2
27 Louisiana 40.8
26 Wisconsin 42.4
25 Kentucky 44.6
24 Texas 46.2
23 Washington 46.2
22 New Hampshire 60.7
21 Tennessee 67.7
20 Michigan 68.9
19 South Carolina 70.3
18 Indiana 74.5
17 Georgia 74.6
16 Virginia 85.9
15 Hawaii 86.9
14 North Carolina 87.6
13 Illinois 88.3
12 California 97.6
11 Ohio 112
10 Pennsylvania 113
9 New York 162
8 Florida 167
7 Delaware 208
6 Maryland 247
5 Connecticut 293
4 Massachusetts 351
3 Rhode Island 411
2 New Jersey 495
1 District of Columbia 4,417

Source: OECD Regional Database, 2024

What it means

How crowded a place is: residents per square kilometre.

How it is calculated

Residents divided by land area in square kilometres.