| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Pontiac | 1 | 10,730 | 11,199 | -0.7% | 1,276 | 8 | City |
| Dwight | 2 | 4,001 | 4,025 | -0.1% | 1,035 | 4 | Village |
| Fairbury | 3 | 3,580 | 3,638 | -0.47% | 1,958 | 2 | City |
| Chatsworth | 4 | 1,149 | 1,189 | -0.61% | 428 | 3 | Town |
| Flanagan | 5 | 1,017 | 1,037 | -0.49% | 1,766 | 1 | Village |
| Forrest | 6 | 1,009 | 1,043 | -0.59% | 1,557 | 1 | Village |
| Odell | 7 | 968 | 1,004 | -0.62% | 899 | 1 | Village |
| Cullom | 8 | 499 | 516 | -0.6% | 1,476 | 0 | Village |
| Cornell | 9 | 435 | 451 | -0.68% | 665 | 1 | Village |
| Saunemin | 10 | 400 | 408 | -0.5% | 1,732 | 0 | Village |
| Long Point | 11 | 196 | 201 | -0.51% | 1,059 | 0 | Village |
| Campus | 12 | 142 | 144 | -0.7% | 1,543 | 0 | Village |
| Strawn | 13 | 101 | 104 | -0.98% | 821 | 0 | Village |
| Emington | 14 | 96 | 99 | -1.03% | 1,157 | 0 | Village |
Pontiac is the largest city in Livingston County, with a population of 10,730.
Emington is the smallest city in Livingston County, with a population of 96.
There are 14 cities in Livingston County, Illinois.