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Lake County, IL Demographics

Lake County, IL is the 3rd most populous of 102 counties in Illinois, with 714,359 residents across 444 square miles. That is about 1,610 people per square mile.

At the 2020 census

Population 714,359
Land area 444 sq mi
Density 1,610 / sq mi

Data: 2020 Census · American Community Survey 2024

How Lake County compares to the US

We're computing this county's comparison table — check back shortly. Population, land area, and density above are already exact.

Central Location: Lake County, IL

Measured from the county's main population center using 2020 census blocks.

We're computing the drive-time and radius areas around Lake County, IL — check back shortly. Meanwhile you can drop a pin anywhere in the radius tool.

Census tracts in Lake County, IL

Name Population Sq mi Per sq mi
Census Tract 8609.06 10,453 6.4 1,634
Census Tract 8614.02 8,778 5.7 1,544
Census Tract 8615.04 8,472 2.8 2,988
Census Tract 8644.02 8,168 8.2 998
Census Tract 8611.06 8,127 6.0 1,363
Census Tract 8610.11 7,864 2.6 3,025
Census Tract 8606 7,663 3.5 2,208
Census Tract 8642.07 7,478 7.7 970
Census Tract 8626.03 7,062 1.1 6,277
Census Tract 8660 6,842 33.1 206
Census Tract 8612.01 6,730 1.1 6,073
Census Tract 8618.03 6,683 1.5 4,377
Census Tract 8644.07 6,632 5.8 1,150
Census Tract 8645.11 6,403 2.6 2,493
Census Tract 8619.02 6,376 1.5 4,287
Census Tract 8645.13 6,301 3.1 2,014
Census Tract 8640.01 6,270 2.3 2,723
Census Tract 8609.03 6,270 2.3 2,698
Census Tract 8641.10 6,233 11.7 533
Census Tract 8644.08 6,232 3.7 1,670
Census Tract 8641.09 6,196 12.3 502
Census Tract 8662 6,162 12.6 488
Census Tract 8615.06 6,109 2.6 2,334
Census Tract 8616.03 6,106 7.6 804
Census Tract 8620 6,070 0.6 9,512
Census Tract 8640.02 6,068 1.7 3,484
Census Tract 8641.05 6,006 3.4 1,767
Census Tract 8639.02 6,000 1.2 4,932
Census Tract 8657 5,985 2.1 2,836
Census Tract 8639.04 5,972 1.8 3,252
Census Tract 8611.08 5,948 1.5 4,030
Census Tract 8614.04 5,947 0.8 7,410
Census Tract 8610.10 5,930 3.7 1,609
Census Tract 8641.08 5,868 1.0 5,700
Census Tract 8604 5,865 4.1 1,431
Census Tract 8630.03 5,857 0.9 6,407
Census Tract 8644.03 5,852 8.2 711
Census Tract 8645.20 5,698 1.8 3,239
Census Tract 8616.04 5,636 5.7 987
Census Tract 8609.05 5,608 3.5 1,592
Census Tract 8645.18 5,594 1.2 4,576
Census Tract 8648.01 5,561 2.8 1,974
Census Tract 8632.02 5,478 3.6 1,515
Census Tract 8621 5,383 0.5 9,970
Census Tract 8652 5,361 0.8 6,521
Census Tract 8610.08 5,271 1.4 3,856
Census Tract 8601.05 5,191 3.2 1,608
Census Tract 8645.19 5,169 1.0 5,327
Census Tract 8608.06 5,148 2.0 2,600
Census Tract 8610.09 5,131 2.3 2,270
Census Tract 8638.01 5,108 3.4 1,518
Census Tract 8613.01 5,080 1.1 4,632
Census Tract 8615.10 5,071 1.5 3,297
Census Tract 8644.10 5,066 1.6 3,232
Census Tract 8645.22 4,967 2.5 1,989
Census Tract 8645.10 4,961 0.8 6,521
Census Tract 8641.07 4,920 3.7 1,317
Census Tract 8649.03 4,907 1.1 4,496
Census Tract 8610.12 4,861 5.7 847
Census Tract 8644.11 4,851 3.6 1,334
Census Tract 8613.03 4,778 0.5 9,327
Census Tract 8605 4,724 0.8 5,935
Census Tract 8616.09 4,716 1.3 3,745
Census Tract 8645.16 4,695 1.2 3,960
Census Tract 8626.04 4,694 1.0 4,658
Census Tract 8645.12 4,659 2.5 1,874
Census Tract 8643.03 4,581 4.8 950
Census Tract 8644.09 4,572 1.3 3,598
Census Tract 8616.07 4,569 1.8 2,472
Census Tract 8637.01 4,556 2.5 1,815
Census Tract 8635 4,538 5.1 892
Census Tract 8643.08 4,528 3.9 1,153
Census Tract 8630.05 4,523 0.4 11,451
Census Tract 8642.04 4,484 4.7 949
Census Tract 8616.11 4,471 1.9 2,337
Census Tract 8608.11 4,429 6.8 654
Census Tract 8639.03 4,424 1.3 3,534
Census Tract 8649.01 4,371 1.2 3,690
Census Tract 8611.05 4,330 1.3 3,295
Census Tract 8642.03 4,310 7.2 597
Census Tract 8617.02 4,289 1.0 4,398
Census Tract 8634 4,276 2.0 2,144
Census Tract 8627 4,238 0.4 11,718
Census Tract 8654 4,197 1.5 2,771
Census Tract 8610.07 4,180 3.5 1,206
Census Tract 8626.05 4,097 1.1 3,772
Census Tract 8618.04 4,090 0.5 8,172
Census Tract 8644.12 4,090 2.2 1,884
Census Tract 8611.07 4,047 1.2 3,355
Census Tract 8637.02 4,045 3.9 1,030
Census Tract 8612.02 4,031 2.1 1,933
Census Tract 8643.05 4,030 3.2 1,252
Census Tract 8645.23 4,024 0.7 5,687
Census Tract 8641.06 4,023 1.8 2,255
Census Tract 8622 3,969 1.8 2,234
Census Tract 8625.01 3,942 0.5 8,634
Census Tract 8642.08 3,878 1.1 3,568
Census Tract 8609.07 3,845 4.4 875
Census Tract 8646.02 3,824 2.3 1,673
Census Tract 8608.12 3,816 7.3 521

Showing the 100 most populous of 159 — 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 →