Counties in Illinois where housing is most affordable relative to local incomes. Higher income-to-home ratios mean residents spend less of their earnings on housing.
| # | County | BTI Score | Afford. Ratio |
|---|---|---|---|
| 01 | Vermilion County IL | 52 | 0.58 |
| 02 | Whiteside County IL | 81 | 0.51 |
| 03 | Macon County IL | 98 | 0.50 |
| 04 | Tazewell County IL | 99 | 0.47 |
| 05 | LaSalle County IL | 93 | 0.46 |
| 06 | Rock Island County IL | 90 | 0.46 |
| 07 | Madison County IL | 87 | 0.45 |
| 08 | Boone County IL | 96 | 0.44 |
| 09 | Sangamon County IL | 92 | 0.44 |
| 10 | Ogle County IL | 90 | 0.44 |
| 11 | St. Clair County IL | 64 | 0.43 |
| 12 | Williamson County IL | 75 | 0.43 |
| 13 | Peoria County IL | 98 | 0.42 |
| 14 | Adams County IL | 91 | 0.42 |
| 15 | Winnebago County IL | 100 | 0.42 |
| 16 | McLean County IL | 36 | 0.39 |
| 17 | Kankakee County IL | 98 | 0.37 |
| 18 | McHenry County IL | 90 | 0.37 |
| 19 | Kendall County IL | 76 | 0.37 |
| 20 | Grundy County IL | 83 | 0.37 |
| 21 | Will County IL | 66 | 0.37 |
| 22 | Jackson County IL | 82 | 0.36 |
| 23 | Lake County IL | 95 | 0.33 |
| 24 | Kane County IL | 78 | 0.33 |
| 25 | Champaign County IL | 94 | 0.32 |
| 26 | DeKalb County IL | 96 | 0.31 |
| 27 | DuPage County IL | 88 | 0.30 |
| 28 | Cook County IL | 79 | 0.27 |