Every year in the United States, tens of millions of Americans move to a new home. According to the U.S. Census Bureau, the bulk of these moves are motivated by personal circumstances, often relating to housing, family, or employment. But when it comes to deciding on a place to live, it can also be helpful to weigh other, less subjective factors.
As a means of gauging and comparing degrees of development between countries — beyond standard measures like gross domestic product and economic growth — the United Nations created the Human Development Index. By accounting for factors related to health and well-being, educational attainment, and standards of living, the HDI offers an assessment of overall quality of life at the individual level within a given geography.
When applied to communities within the United States, the core principles of the HDI reveal that some parts of the country are far better places to live than others.
Using an index inspired by the HDI, 24/7 Wall St. identified the best counties in Illinois to live in. Counties are ranked on a combination of three measures – average life expectancy at birth, the share of adults with a bachelor’s degree or higher, and the poverty rate. Of the 102 counties in Illinois, we ranked the 30 with the highest HDI score.
Across all of Illinois, average life expectancy at birth is 78.6 years. Additionally, 11.8% of the population live below the poverty line and 36.7% of adults have a bachelor’s degree or higher. Of the 30 counties on this list, three compare favorably to the state as a whole in each of these metrics.
Among these 30 Illinois counties, average life expectancy at birth ranges from 76.3 years to 81.9 years. Meanwhile, poverty rates vary between 4.3% and 18.7%, and bachelor’s degree attainment rates range from about 20% to over 50%.
Data used to calculate rankings are from the U.S. Census Bureau’s 2022 American Community Survey and County Health Rankings & Roadmaps, a joint program of the Robert Wood Johnson Foundation and the University of Wisconsin Population Health Institute. All ACS data are five-year averages.
Why It Matters
Many of the most commonly cited economic indicators — including unemployment, GDP, and industrial output — are useful gauges of prosperity and productive capacity in a given area. But when it comes to measuring overall quality of life, any single metric inevitably falls short. To address these shortcomings, the HDI combines three key social and economic measures into a single index score, allowing for objective comparisons between communities across the United States.
30. Adams County
- Avg. life expectancy at birth: 77.8 years
- Poverty rate: 12.1%
- Adults with a bachelor’s degree: 26.9%
- Median household income: $63,767
- Population: 65,583
29. Madison County
- Avg. life expectancy at birth: 76.3 years
- Poverty rate: 12.0%
- Adults with a bachelor’s degree: 29.4%
- Median household income: $71,759
- Population: 265,512
28. Peoria County
- Avg. life expectancy at birth: 76.8 years
- Poverty rate: 15.5%
- Adults with a bachelor’s degree: 33.7%
- Median household income: $63,409
- Population: 181,186
27. Effingham County
- Avg. life expectancy at birth: 77.7 years
- Poverty rate: 10.8%
- Adults with a bachelor’s degree: 25.9%
- Median household income: $73,181
- Population: 34,594
26. Calhoun County
- Avg. life expectancy at birth: 80.4 years
- Poverty rate: 8.4%
- Adults with a bachelor’s degree: 19.5%
- Median household income: $88,059
- Population: 4,472
25. Henry County
- Avg. life expectancy at birth: 78.1 years
- Poverty rate: 9.2%
- Adults with a bachelor’s degree: 24.7%
- Median household income: $66,313
- Population: 49,157
24. Boone County
- Avg. life expectancy at birth: 79.3 years
- Poverty rate: 9.8%
- Adults with a bachelor’s degree: 24.0%
- Median household income: $80,502
- Population: 53,459
23. Ogle County
- Avg. life expectancy at birth: 78.5 years
- Poverty rate: 8.3%
- Adults with a bachelor’s degree: 23.4%
- Median household income: $75,782
- Population: 51,672
22. Jasper County
- Avg. life expectancy at birth: 81.2 years
- Poverty rate: 9.2%
- Adults with a bachelor’s degree: 21.4%
- Median household income: $67,429
- Population: 9,295
21. DeKalb County
- Avg. life expectancy at birth: 78.7 years
- Poverty rate: 15.4%
- Adults with a bachelor’s degree: 34.1%
- Median household income: $68,617
- Population: 100,686
20. Washington County
- Avg. life expectancy at birth: 79.4 years
- Poverty rate: 8.0%
- Adults with a bachelor’s degree: 23.1%
- Median household income: $75,111
- Population: 13,781
19. Putnam County
- Avg. life expectancy at birth: 80.8 years
- Poverty rate: 8.8%
- Adults with a bachelor’s degree: 23.5%
- Median household income: $75,726
- Population: 5,628
18. Tazewell County
- Avg. life expectancy at birth: 78.3 years
- Poverty rate: 8.7%
- Adults with a bachelor’s degree: 27.5%
- Median household income: $74,606
- Population: 131,276
17. Grundy County
- Avg. life expectancy at birth: 77.2 years
- Poverty rate: 6.0%
- Adults with a bachelor’s degree: 25.7%
- Median household income: $89,993
- Population: 52,624
16. Sangamon County
- Avg. life expectancy at birth: 77.7 years
- Poverty rate: 12.9%
- Adults with a bachelor’s degree: 34.6%
- Median household income: $71,653
- Population: 196,122
15. Clinton County
- Avg. life expectancy at birth: 80.2 years
- Poverty rate: 7.2%
- Adults with a bachelor’s degree: 23.6%
- Median household income: $78,054
- Population: 36,998
14. Menard County
- Avg. life expectancy at birth: 79.9 years
- Poverty rate: 7.9%
- Adults with a bachelor’s degree: 25.9%
- Median household income: $84,846
- Population: 12,284
13. Jo Daviess County
- Avg. life expectancy at birth: 80.5 years
- Poverty rate: 7.8%
- Adults with a bachelor’s degree: 27.9%
- Median household income: $67,729
- Population: 21,942
12. Champaign County
- Avg. life expectancy at birth: 80.1 years
- Poverty rate: 18.7%
- Adults with a bachelor’s degree: 45.6%
- Median household income: $61,090
- Population: 206,525
11. Cook County
- Avg. life expectancy at birth: 78.6 years
- Poverty rate: 13.4%
- Adults with a bachelor’s degree: 41.3%
- Median household income: $78,304
- Population: 5,225,367
10. Piatt County
- Avg. life expectancy at birth: 80.0 years
- Poverty rate: 7.2%
- Adults with a bachelor’s degree: 30.8%
- Median household income: $81,151
- Population: 16,698
9. Woodford County
- Avg. life expectancy at birth: 79.1 years
- Poverty rate: 7.5%
- Adults with a bachelor’s degree: 35.4%
- Median household income: $80,093
- Population: 38,414
8. McLean County
- Avg. life expectancy at birth: 79.4 years
- Poverty rate: 14.2%
- Adults with a bachelor’s degree: 46.0%
- Median household income: $75,356
- Population: 171,284
7. Will County
- Avg. life expectancy at birth: 79.2 years
- Poverty rate: 6.7%
- Adults with a bachelor’s degree: 36.1%
- Median household income: $103,678
- Population: 696,774
6. Kane County
- Avg. life expectancy at birth: 81.0 years
- Poverty rate: 8.3%
- Adults with a bachelor’s degree: 36.3%
- Median household income: $96,400
- Population: 517,254
5. McHenry County
- Avg. life expectancy at birth: 80.4 years
- Poverty rate: 6.0%
- Adults with a bachelor’s degree: 35.3%
- Median household income: $100,101
- Population: 311,133
4. Kendall County
- Avg. life expectancy at birth: 81.2 years
- Poverty rate: 4.7%
- Adults with a bachelor’s degree: 35.8%
- Median household income: $106,358
- Population: 132,795
3. Monroe County
- Avg. life expectancy at birth: 80.7 years
- Poverty rate: 4.3%
- Adults with a bachelor’s degree: 37.9%
- Median household income: $100,685
- Population: 34,905
2. Lake County
- Avg. life expectancy at birth: 81.0 years
- Poverty rate: 7.8%
- Adults with a bachelor’s degree: 46.9%
- Median household income: $104,553
- Population: 713,159
1. DuPage County
- Avg. life expectancy at birth: 81.9 years
- Poverty rate: 6.3%
- Adults with a bachelor’s degree: 51.1%
- Median household income: $107,035
- Population: 930,559
| Rank | County | Avg. life expectancy at birth (yrs.) | Adults with a bachelor’s degree (%) | Poverty rate (%) | Population |
|---|---|---|---|---|---|
| 1 | DuPage, Illinois | 81.9 | 51.1 | 6.3 | 930,559 |
| 2 | Lake, Illinois | 81.0 | 46.9 | 7.8 | 713,159 |
| 3 | Monroe, Illinois | 80.7 | 37.9 | 4.3 | 34,905 |
| 4 | Kendall, Illinois | 81.2 | 35.8 | 4.7 | 132,795 |
| 5 | McHenry, Illinois | 80.4 | 35.3 | 6.0 | 311,133 |
| 6 | Kane, Illinois | 81.0 | 36.3 | 8.3 | 517,254 |
| 7 | Will, Illinois | 79.2 | 36.1 | 6.7 | 696,774 |
| 8 | McLean, Illinois | 79.4 | 46.0 | 14.2 | 171,284 |
| 9 | Woodford, Illinois | 79.1 | 35.4 | 7.5 | 38,414 |
| 10 | Piatt, Illinois | 80.0 | 30.8 | 7.2 | 16,698 |
| 11 | Cook, Illinois | 78.6 | 41.3 | 13.4 | 5,225,367 |
| 12 | Champaign, Illinois | 80.1 | 45.6 | 18.7 | 206,525 |
| 13 | Jo Daviess, Illinois | 80.5 | 27.9 | 7.8 | 21,942 |
| 14 | Menard, Illinois | 79.9 | 25.9 | 7.9 | 12,284 |
| 15 | Clinton, Illinois | 80.2 | 23.6 | 7.2 | 36,998 |
| 16 | Sangamon, Illinois | 77.7 | 34.6 | 12.9 | 196,122 |
| 17 | Grundy, Illinois | 77.2 | 25.7 | 6.0 | 52,624 |
| 18 | Tazewell, Illinois | 78.3 | 27.5 | 8.7 | 131,276 |
| 19 | Putnam, Illinois | 80.8 | 23.5 | 8.8 | 5,628 |
| 20 | Washington, Illinois | 79.4 | 23.1 | 8.0 | 13,781 |
| 21 | DeKalb, Illinois | 78.7 | 34.1 | 15.4 | 100,686 |
| 22 | Jasper, Illinois | 81.2 | 21.4 | 9.2 | 9,295 |
| 23 | Ogle, Illinois | 78.5 | 23.4 | 8.3 | 51,672 |
| 24 | Boone, Illinois | 79.3 | 24.0 | 9.8 | 53,459 |
| 25 | Henry, Illinois | 78.1 | 24.7 | 9.2 | 49,157 |
| 26 | Calhoun, Illinois | 80.4 | 19.5 | 8.4 | 4,472 |
| 27 | Effingham, Illinois | 77.7 | 25.9 | 10.8 | 34,594 |
| 28 | Peoria, Illinois | 76.8 | 33.7 | 15.5 | 181,186 |
| 29 | Madison, Illinois | 76.3 | 29.4 | 12.0 | 265,512 |
| 30 | Adams, Illinois | 77.8 | 26.9 | 12.1 | 65,583 |
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