| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Boaz | city | Illinois | United States | 37.29 | -88.90 | 387 | |
| Bobtown | city | Illinois | United States | 40.08 | -89.99 | 830 | |
| Boden | city | Illinois | United States | 41.26 | -90.59 | 830 | |
| Bodmann | city | Illinois | United States | 39.88 | -88.58 | 830 | |
| Bogota | city | Illinois | United States | 38.92 | -88.24 | 830 | |
| Bohemian California | city | Illinois | United States | 41.85 | -87.70 | 830 | |
| Bohleysville | city | Illinois | United States | 38.42 | -90.12 | 830 | |
| Bolingbrook | city | Illinois | United States | 41.70 | -88.07 | 830 | |
| Bolivia | city | Illinois | United States | 39.74 | -89.35 | 830 | |
| Bolton | city | Illinois | United States | 42.24 | -89.73 | 830 | |
| Bondville | city | Illinois | United States | 40.11 | -88.37 | 830 | |
| Bone Gap | city | Illinois | United States | 38.45 | -88.00 | 830 | |
| Bonfield | city | Illinois | United States | 41.15 | -88.06 | 830 | |
| Bongard | city | Illinois | United States | 39.92 | -88.12 | 830 | |
| Bonnie | city | Illinois | United States | 38.20 | -88.90 | 413 | |
| Bonnie Valley | city | Illinois | United States | 41.93 | -88.37 | 830 | |
| Boody | city | Illinois | United States | 39.77 | -89.05 | 830 | |
| Boos | city | Illinois | United States | 38.93 | -88.11 | 830 | |
| Boothby | city | Illinois | United States | 38.00 | -88.78 | 830 | |
| Borton | city | Illinois | United States | 39.66 | -87.93 | 830 | |
| Boschome | city | Illinois | United States | 42.17 | -88.05 | 830 | |
| Boskydell | city | Illinois | United States | 37.67 | -89.21 | 400 | |
| Boula | city | Illinois | United States | 41.62 | -88.02 | 830 | |
| Boulder | city | Illinois | United States | 38.70 | -89.23 | 830 | |
| Boulder Hill | city | Illinois | United States | 41.71 | -88.34 | 830 | |
| Bourbon | city | Illinois | United States | 39.75 | -88.38 | 830 | |
| Bourbonais (historical) | city | Illinois | United States | 41.34 | -89.64 | 830 | |
| Bourbonnais | city | Illinois | United States | 41.14 | -87.88 | 830 | |
| Bowen | city | Illinois | United States | 40.23 | -91.06 | 830 | |
| Bowes | city | Illinois | United States | 42.01 | -88.39 | 849 | |
| Bowes Bend | city | Illinois | United States | 42.01 | -88.41 | 875 | |
| Bowlesville (historical) | city | Illinois | United States | 37.67 | -88.21 | 830 | |
| Bowling Green (historical) | city | Illinois | United States | 40.66 | -89.17 | 830 | |
| Bowman (historical) | city | Illinois | United States | 39.14 | -90.24 | 830 | |
| Bowmanville | city | Illinois | United States | 41.97 | -87.69 | 830 | |
| Boyd | city | Illinois | United States | 38.41 | -89.01 | 830 | |
| Boyle | city | Illinois | United States | 39.28 | -90.58 | 830 | |
| Boyleston | city | Illinois | United States | 38.36 | -88.44 | 406 | |
| Boynton | city | Illinois | United States | 40.35 | -89.44 | 830 |