23 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Princeton | 1 | 7,577 | 7,846 | -0.59% | 920 | 8 | City |
| Spring Valley | 2 | 5,318 | 5,576 | -0.8% | 717 | 7 | City |
| De Pue | 3 | 1,548 | 1,622 | -0.77% | 633 | 2 | Village |
| Ladd | 4 | 1,449 | 1,262 | 2.19% | 1,200 | 1 | Village |
| Walnut | 5 | 1,244 | 1,307 | -0.8% | 1,557 | 1 | Village |
| Wyanet | 6 | 846 | 882 | -0.7% | 894 | 1 | Village |
| Sheffield | 7 | 787 | 820 | -0.63% | 676 | 1 | Village |
| Tiskilwa | 8 | 700 | 741 | -0.99% | 1,538 | 0 | Village |
| La Moille | 9 | 660 | 689 | -0.75% | 636 | 1 | Village |
| Dalzell | 10 | 633 | 663 | -0.78% | 772 | 1 | Village |
| Buda | 11 | 458 | 478 | -0.65% | 452 | 1 | Village |
| Ohio | 12 | 452 | 469 | -0.66% | 708 | 1 | Village |
| Cherry | 13 | 414 | 432 | -0.72% | 781 | 1 | Village |
| Neponset | 14 | 401 | 422 | -0.74% | 400 | 1 | Village |
| Malden | 15 | 306 | 318 | -0.65% | 1,121 | 0 | Village |
| Seatonville | 16 | 306 | 323 | -0.97% | 530 | 1 | Village |
| Manlius | 17 | 286 | 298 | -0.69% | 897 | 0 | Village |
| Bureau Junction | 18 | 274 | 286 | -0.72% | 171 | 2 | Village |
| Mineral | 19 | 198 | 206 | -0.5% | 584 | 0 | Village |
| Arlington | 20 | 163 | 169 | -0.61% | 413 | 0 | Village |
| Dover | 21 | 131 | 136 | -0.76% | 482 | 0 | Village |
| New Bedford | 22 | 74 | 77 | 0% | 477 | 0 | Village |
| Hollowayville | 23 | 43 | 45 | 0% | 878 | 0 | Village |
Princeton is the largest city in Bureau County, with a population of 7,577.
Hollowayville is the smallest city in Bureau County, with a population of 43.
There are 23 cities in Bureau County, Illinois.