17 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Lorain | 1 | 65,411 | 65,226 | 0.06% | 2,771 | 23.61 | City |
| Elyria | 2 | 53,406 | 52,683 | 0.27% | 2,599 | 20.55 | City |
| North Ridgeville | 3 | 38,133 | 35,445 | 1.43% | 1,627 | 23.44 | City |
| Avon Lake | 4 | 26,384 | 25,279 | 0.84% | 2,371 | 11.13 | City |
| Avon | 5 | 25,717 | 24,932 | 0.61% | 1,237 | 20.79 | City |
| Amherst | 6 | 13,063 | 12,725 | 0.52% | 1,844 | 7.08 | City |
| Sheffield Lake | 7 | 8,972 | 8,954 | 0.04% | 3,600 | 2.49 | City |
| Oberlin | 8 | 7,123 | 8,557 | -3.87% | 1,446 | 4.92 | City |
| Grafton | 9 | 5,679 | 5,914 | -0.82% | 1,152 | 4.93 | Village |
| Wellington | 10 | 4,879 | 4,808 | 0.29% | 1,339 | 3.64 | Village |
| Sheffield | 11 | 4,668 | 4,175 | 2.17% | 435 | 10.74 | Village |
| LaGrange | 12 | 3,003 | 2,620 | 2.63% | 1,580 | 1.90 | Village |
| South Amherst | 13 | 1,550 | 1,575 | -0.32% | 644 | 2.41 | Village |
| Pheasant Run | 14 | 1,502 | 1,470 | 0.47% | 1,608 | 0.93 | CDP |
| Eaton Estates | 15 | 1,183 | 1,209 | -0.25% | 1,361 | 0.87 | CDP |
| Kipton | 16 | 205 | 210 | -0.48% | 466 | 0.44 | Village |
| Rochester | 17 | 160 | 159 | 0% | 143 | 1.12 | Village |
Lorain is the largest city in Lorain County, with a population of 65,411.
Rochester is the smallest city in Lorain County.
There are 17 cities in Lorain County, Ohio.