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Cook County, IL Demographics

Cook County, IL is the most populous of 102 counties in Illinois, with 5,273,615 residents across 945 square miles. That is about 5,581 people per square mile.

At the 2020 census

Population 5,273,615
Land area 945 sq mi
Density 5,581 / sq mi

Data: 2020 Census · American Community Survey 2024

How Cook County compares to the US

Indicator Cook County US
% Households: No Vehicle Available Vehicle Availability by Household (2024) 18 8.4 2.1× US
Bars & pubs Points of interest 1,076 38,125 +77% vs US per capita
% Commute 1hr+ Travel Time to Work - 2024 12 8.6 +46% vs US
Hospitals Points of interest 78 7,840 −38% vs US per capita
% Renter Occupied Home Ownership (2024) 42 35 +21% vs US
% One-Person Households Household Size (2024) 35 29 +21% vs US
% With Bachelor's or Higher Educational Attainment (2024) 43 36 +20% vs US
% Owner Occupied Home Ownership (2024) 58 65 −11% vs US
% Family Households Household Size (2024) 58 64 −10% vs US
% With No High School Diploma or GED Educational Attainment (2024) 11 10 +9% vs US
Parks Points of interest 2,737 187,321 −8% vs US per capita
Grocery stores Points of interest 602 41,172 −8% vs US per capita
Childcare & preschools Points of interest 230 13,461 +7% vs US per capita
% Households: No Internet Access Internet Subscription Status (2024) 6.3 6.6 −5% vs US
Median Household Income Median Household Income (2024 - Computed) ~84,203 ~80,460 +5% vs US
Restaurants Points of interest 3,603 223,155 ≈ US per capita

Estimates from American Community Survey data aggregated over census tracts; each value is compared against the national figure computed the same way. Counts marked "per capita" compare rates, not totals. Points-of-interest counts © OpenStreetMap contributors (ODbL).

Central Location: Tri-Taylor, Chicago, IL

Measuring from Tri-Taylor, Chicago, IL: the population-weighted center of Chicago, IL, the largest city in Cook County, IL, from census tracts. Open any row to explore it in the radius tool.

Population Sq mi Per sq mi
5 min 1,246 0.1 9,992 Open →
10 min 4,321 0.5 7,971 Open →
15 min 7,856 1.3 6,131 Open →
30 min 63,107 5.6 11,219 Open →
45 min 172,367 12.4 13,907 Open →
1 hr 323,313 21.7 14,908 Open →

A census block counts toward an area when its center falls inside it. How this is computed →

Census tracts in Cook County, IL

Name Population Sq mi Per sq mi
Census Tract 818 11,373 0.3 42,012
Census Tract 3301.02 10,811 0.2 69,509
Census Tract 8390 10,435 0.2 55,621
Census Tract 814.03 9,843 0.1 76,952
Census Tract 3201.01 9,532 0.2 53,009
Census Tract 8331 9,493 0.4 26,643
Census Tract 810 8,746 0.1 75,803
Census Tract 8237.03 8,659 2.0 4,314
Census Tract 8155 8,310 0.6 14,104
Census Tract 3301.03 8,248 0.2 41,914
Census Tract 8391 8,234 0.4 19,356
Census Tract 8201.01 7,889 2.7 2,930
Census Tract 8060.02 7,833 0.9 8,759
Census Tract 8042.02 7,793 5.2 1,492
Census Tract 8051.11 7,786 1.5 5,223
Census Tract 8144 7,781 0.6 12,103
Census Tract 8241.23 7,753 1.5 5,126
Census Tract 8316 7,745 0.6 13,473
Census Tract 8073 7,718 0.8 9,811
Census Tract 207.02 7,717 0.3 28,378
Census Tract 8142 7,671 0.9 8,111
Census Tract 8300.03 7,640 4.1 1,854
Census Tract 8428 7,637 0.6 13,042
Census Tract 8047.11 7,629 0.8 9,475
Census Tract 8134 7,571 0.4 17,665
Census Tract 8024.04 7,558 1.0 7,671
Census Tract 8060.04 7,554 1.0 7,265
Census Tract 208.02 7,546 0.2 30,347
Census Tract 8036.08 7,544 6.0 1,258
Census Tract 321 7,543 0.2 45,325
Census Tract 1911 7,533 0.3 23,723
Census Tract 8300.04 7,529 3.3 2,315
Census Tract 1502 7,434 0.5 14,512
Census Tract 8050.02 7,422 0.7 10,191
Census Tract 2801 7,421 0.2 33,041
Census Tract 8411 7,356 0.4 17,051
Census Tract 402.02 7,318 0.2 32,198
Census Tract 2505 7,315 0.8 9,190
Census Tract 1710 7,313 0.5 13,597
Census Tract 8041.02 7,307 3.2 2,252
Census Tract 8044.03 7,297 1.6 4,491
Census Tract 8241.05 7,297 1.7 4,287
Census Tract 8226.02 7,296 1.0 7,627
Census Tract 8051.05 7,278 1.1 6,430
Census Tract 8041.06 7,264 1.5 4,720
Census Tract 6502 7,251 0.4 18,949
Census Tract 7703 7,234 5.6 1,303
Census Tract 6304 7,204 0.3 28,345
Census Tract 8248 7,178 1.8 4,019
Census Tract 8135 7,169 0.3 22,524
Census Tract 8238.03 7,146 2.1 3,452
Census Tract 202 7,128 0.5 14,865
Census Tract 8026.05 7,125 2.0 3,514
Census Tract 8046.07 7,123 1.4 5,069
Census Tract 1503 7,120 0.5 13,902
Census Tract 8207 7,110 1.9 3,695
Census Tract 609 7,104 0.2 36,867
Census Tract 8048.10 7,097 1.2 6,038
Census Tract 8046.06 7,088 1.9 3,665
Census Tract 8016.08 7,057 2.6 2,684
Census Tract 814.02 7,052 0.2 30,977
Census Tract 8237.02 7,050 1.5 4,684
Census Tract 8047.01 7,045 4.9 1,449
Census Tract 2819 7,031 0.2 43,252
Census Tract 1002 7,024 0.8 8,830
Census Tract 8241.06 7,021 3.3 2,126
Census Tract 5501 7,019 2.8 2,529
Census Tract 8036.05 7,002 1.2 5,682
Census Tract 8028.02 6,991 1.4 5,068
Census Tract 8043.05 6,952 1.1 6,147
Census Tract 102.01 6,939 0.2 35,626
Census Tract 8049.01 6,927 1.1 6,272
Census Tract 1203 6,920 0.8 8,721
Census Tract 7005.01 6,912 0.6 10,718
Census Tract 8152 6,901 0.6 12,338
Census Tract 632 6,900 0.1 48,724
Census Tract 6504 6,894 0.4 16,200
Census Tract 8298 6,891 2.0 3,422
Census Tract 8245.03 6,880 4.7 1,451
Census Tract 8048.05 6,860 1.3 5,380
Census Tract 1908 6,831 0.3 26,753
Census Tract 8074 6,824 0.5 12,654
Census Tract 8036.03 6,824 3.9 1,748
Census Tract 2306 6,817 0.4 17,466
Census Tract 8047.09 6,814 1.2 5,795
Census Tract 8048.04 6,809 1.9 3,641
Census Tract 8051.07 6,793 1.2 5,542
Census Tract 8245.05 6,783 1.0 6,498
Census Tract 8139 6,768 0.3 25,516
Census Tract 8241.07 6,747 1.5 4,582
Census Tract 8026.08 6,730 1.7 3,979
Census Tract 8025.05 6,723 2.7 2,469
Census Tract 313 6,719 0.2 27,526
Census Tract 4314 6,716 0.4 16,032
Census Tract 6403 6,710 0.5 13,120
Census Tract 8076 6,705 1.7 3,934
Census Tract 8111 6,703 1.4 4,758
Census Tract 206.01 6,699 0.2 29,341
Census Tract 8311 6,697 0.5 13,189
Census Tract 8285.05 6,682 4.8 1,397

Showing the 100 most populous of 1,331 — the rest are shown on the map.

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About this page

This page shows demographics for a US county from the 2020 census and the American Community Survey: population, land area, density, urban share, and how the county compares to national averages for income, housing, age, and more.

Counties subdivide into census tracts, listed below with their populations. The drive-time and radius tables measure the population around the county's main population center.

Read how BlockAtlas computes population within an area →