41 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Pontiac | 1 | 12,224 | 12,356 | 0.11% | 342 | 36 | Township |
| Pontiac | 2 | 10,977 | 11,208 | -0.34% | 1,306 | 8 | City |
| Dwight | 3 | 4,283 | 4,269 | 0.14% | 123 | 35 | Township |
| Indian Grove | 4 | 4,087 | 4,155 | -0.02% | 113 | 36 | Township |
| Dwight | 5 | 4,035 | 4,026 | 0.05% | 1,044 | 4 | Village |
| Fairbury | 6 | 3,540 | 3,633 | -0.42% | 1,937 | 2 | City |
| Reading | 7 | 2,081 | 2,080 | 0.43% | 55 | 38 | Township |
| Forrest | 8 | 1,399 | 1,417 | 0.29% | 38 | 36 | Township |
| Chatsworth | 9 | 1,324 | 1,347 | 0.15% | 37 | 36 | Township |
| Nebraska | 10 | 1,308 | 1,322 | 0.23% | 36 | 36 | Township |
| Odell | 11 | 1,175 | 1,202 | -0.09% | 33 | 36 | Township |
| Chatsworth | 12 | 1,150 | 1,186 | -0.52% | 429 | 3 | Town |
| Flanagan | 13 | 1,015 | 1,039 | -0.39% | 1,762 | 1 | Village |
| Forrest | 14 | 1,007 | 1,043 | -0.59% | 1,554 | 1 | Village |
| Odell | 15 | 972 | 1,005 | -0.51% | 903 | 1 | Village |
| Amity | 16 | 753 | 764 | 0.13% | 21 | 36 | Township |
| Newtown | 17 | 677 | 673 | 0.45% | 19 | 36 | Township |
| Saunemin | 18 | 615 | 613 | 0.65% | 14 | 43 | Township |
| Rooks Creek | 19 | 547 | 553 | 0% | 15 | 36 | Township |
| Cullom | 20 | 500 | 517 | -0.6% | 1,479 | 0 | Village |
| Long Point | 21 | 446 | 453 | 0% | 12 | 36 | Township |
| Cornell | 22 | 437 | 449 | -0.46% | 668 | 1 | Village |
| Avoca | 23 | 416 | 413 | 0.73% | 11 | 36 | Township |
| Saunemin | 24 | 404 | 409 | -0.25% | 1,749 | 0 | Village |
| Eppards Point | 25 | 339 | 345 | 0% | 9 | 36 | Township |
| Round Grove | 26 | 330 | 331 | 0.3% | 9 | 36 | Township |
| Owego | 27 | 309 | 305 | 0.98% | 9 | 36 | Township |
| Esmen | 28 | 290 | 295 | 0% | 8 | 36 | Township |
| Waldo | 29 | 272 | 274 | 0.37% | 7 | 36 | Township |
| Pleasant Ridge | 30 | 260 | 262 | 0.39% | 9 | 29 | Township |
| Fayette | 31 | 247 | 249 | 0.41% | 11 | 23 | Township |
| Sunbury | 32 | 218 | 222 | 0% | 6 | 36 | Township |
| Pike | 33 | 215 | 219 | 0% | 6 | 36 | Township |
| Long Point | 34 | 197 | 202 | -0.51% | 1,065 | 0 | Village |
| Nevada | 35 | 178 | 181 | 0% | 5 | 37 | Township |
| Charlotte | 36 | 154 | 157 | 0% | 5 | 30 | Township |
| Campus | 37 | 138 | 143 | -0.72% | 1,500 | 0 | Village |
| Belle Prairie | 38 | 132 | 134 | 0% | 6 | 23 | Township |
| Strawn | 39 | 101 | 104 | 0% | 821 | 0 | Village |
| Emington | 40 | 98 | 101 | 0% | 1,181 | 0 | Village |
| Germanville | 41 | 63 | 64 | 0% | 3 | 23 | Township |
Pontiac is the largest city in Livingston County, with a population of 12,224.
Germanville is the smallest city in Livingston County, with a population of 63.
There are 41 cities in Livingston County, Illinois.