| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Princeton | 1 | 7,631 | 7,845 | -0.56% | 926 | 8 | City |
| Spring Valley | 2 | 5,367 | 5,572 | -0.76% | 724 | 7 | City |
| De Pue | 3 | 1,558 | 1,622 | -0.83% | 637 | 2 | Village |
| Ladd | 4 | 1,415 | 1,260 | 2.24% | 1,171 | 1 | Village |
| Walnut | 5 | 1,257 | 1,307 | -0.79% | 1,573 | 1 | Village |
| Wyanet | 6 | 852 | 880 | -0.7% | 901 | 1 | Village |
| Sheffield | 7 | 792 | 820 | -0.75% | 680 | 1 | Village |
| Tiskilwa | 8 | 712 | 741 | -0.84% | 1,565 | 0 | Village |
| La Moille | 9 | 665 | 687 | -0.75% | 641 | 1 | Village |
| Dalzell | 10 | 633 | 662 | -0.94% | 772 | 1 | Village |
| Buda | 11 | 462 | 476 | -0.65% | 456 | 1 | Village |
| Ohio | 12 | 454 | 468 | -0.66% | 712 | 1 | Village |
| Cherry | 13 | 414 | 429 | -0.72% | 781 | 1 | Village |
| Neponset | 14 | 400 | 417 | -0.74% | 399 | 1 | Village |
| Seatonville | 15 | 308 | 321 | -0.96% | 534 | 1 | Village |
| Malden | 16 | 306 | 315 | -0.65% | 1,121 | 0 | Village |
| Manlius | 17 | 287 | 296 | -0.69% | 900 | 0 | Village |
| Bureau Junction | 18 | 277 | 287 | -0.72% | 172 | 2 | Village |
| Mineral | 19 | 197 | 204 | -1.01% | 581 | 0 | Village |
| Arlington | 20 | 162 | 167 | -0.61% | 410 | 0 | Village |
| Dover | 21 | 134 | 138 | -0.74% | 493 | 0 | Village |
| New Bedford | 22 | 74 | 77 | -1.33% | 477 | 0 | Village |
| Hollowayville | 23 | 44 | 46 | -2.22% | 898 | 0 | Village |
Princeton is the largest city in Bureau County, with a population of 7,631.
Hollowayville is the smallest city in Bureau County, with a population of 44.
There are 23 cities in Bureau County, Illinois.