63 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Mentor | 1 | 46,599 | 47,424 | -0.35% | 1,676 | 27.80 | City |
| Perry township | 2 | 28,153 | 28,307 | -0.07% | 1,237 | 22.77 | Township |
| Madison township | 3 | 26,191 | 25,983 | -0.17% | 663 | 39.49 | Township |
| Willoughby | 4 | 24,357 | 23,871 | 0.4% | 2,379 | 10.24 | City |
| Painesville | 5 | 20,817 | 20,286 | 0.51% | 3,050 | 6.83 | City |
| Painesville township | 6 | 20,338 | 20,481 | -0.04% | 1,212 | 16.78 | Township |
| Concord township | 7 | 19,169 | 19,265 | 0% | 832 | 23.03 | Township |
| Madison township | 8 | 18,429 | 18,508 | 0.02% | 425 | 43.36 | Township |
| Eastlake | 9 | 17,173 | 17,647 | -0.55% | 2,680 | 6.41 | City |
| Perry township | 10 | 15,963 | 16,276 | -0.22% | 1,014 | 15.75 | Township |
| Willowick | 11 | 14,054 | 14,226 | -0.24% | 5,540 | 2.54 | City |
| Wickliffe | 12 | 12,583 | 12,665 | -0.13% | 2,730 | 4.61 | City |
| Madison township | 13 | 11,086 | 11,091 | -0.04% | 734 | 15.11 | Township |
| Willoughby Hills | 14 | 9,912 | 10,016 | -0.21% | 921 | 10.76 | City |
| Perry township | 15 | 8,809 | 8,858 | -0.01% | 378 | 23.32 | Township |
| Madison township | 16 | 8,756 | 8,558 | 0.61% | 249 | 35.22 | Township |
| Madison township | 17 | 6,521 | 6,451 | 0.37% | 190 | 34.36 | Township |
| Perry township | 18 | 6,153 | 6,516 | -0.93% | 242 | 25.47 | Township |
| Perry township | 19 | 5,832 | 5,852 | 0.09% | 159 | 36.58 | Township |
| Perry township | 20 | 4,677 | 4,655 | 0.13% | 80 | 58.38 | Township |
| Madison township | 21 | 3,784 | 3,898 | -0.42% | 73 | 51.90 | Township |
| Perry township | 22 | 3,714 | 3,911 | -0.93% | 1,793 | 2.07 | Township |
| Madison township | 23 | 3,583 | 3,583 | 0.2% | 135 | 26.56 | Township |
| Madison township | 24 | 3,430 | 3,320 | 0.53% | 156 | 21.98 | Township |
| Madison | 25 | 3,402 | 3,437 | -0.21% | 669 | 5.09 | Village |
| Perry township | 26 | 3,315 | 3,378 | -0.27% | 101 | 32.70 | Township |
| Leroy township | 27 | 3,113 | 3,129 | 0% | 123 | 25.39 | Township |
| Fairport Harbor | 28 | 3,062 | 3,109 | -0.29% | 2,981 | 1.03 | Village |
| Madison township | 29 | 2,812 | 2,880 | -0.39% | 79 | 35.63 | Township |
| Perry township | 30 | 2,788 | 2,742 | 0.54% | 109 | 25.59 | Township |
| Madison township | 31 | 2,492 | 2,536 | -0.28% | 61 | 41.03 | Township |
| Perry township | 32 | 2,329 | 2,405 | -0.85% | 55 | 42.06 | Township |
| Madison township | 33 | 2,103 | 2,105 | 0% | 46 | 45.30 | Township |
| Perry township | 34 | 2,012 | 1,995 | 0.5% | 66 | 30.31 | Township |
| Perry township | 35 | 1,992 | 1,969 | 0.35% | 95 | 20.94 | Township |
| Madison township | 36 | 1,854 | 1,731 | 1.42% | 76 | 24.33 | Township |
| Madison township | 37 | 1,789 | 1,767 | 0.56% | 61 | 29.45 | Township |
| Perry township | 38 | 1,744 | 1,656 | 0.98% | 70 | 24.96 | Township |
| Perry | 39 | 1,592 | 1,607 | -0.19% | 701 | 2.27 | Village |
| Perry township | 40 | 1,577 | 1,565 | 0.13% | 45 | 35.20 | Township |
| Perry township | 41 | 1,490 | 1,505 | -0.13% | 39 | 38.10 | Township |
| Perry township | 42 | 1,445 | 1,456 | -0.21% | 81 | 17.91 | Township |
| Madison township | 43 | 1,387 | 1,379 | 0.29% | 60 | 23.24 | Township |
| Perry township | 44 | 1,343 | 1,265 | 1.21% | 37 | 36.78 | Township |
| Perry township | 45 | 1,089 | 1,104 | -0.27% | 38 | 28.69 | Township |
| Madison township | 46 | 1,085 | 1,102 | -0.28% | 31 | 35.39 | Township |
| Madison township | 47 | 999 | 998 | 0.2% | 40 | 24.91 | Township |
| Perry township | 48 | 985 | 993 | -0.3% | 33 | 29.90 | Township |
| Perry township | 49 | 964 | 968 | 0% | 36 | 26.75 | Township |
| Perry township | 50 | 960 | 961 | 0.21% | 34 | 28.06 | Township |
| Perry township | 51 | 917 | 904 | 0.44% | 40 | 22.91 | Township |
| Perry township | 52 | 899 | 899 | 0.11% | 32 | 27.82 | Township |
| Madison township | 53 | 892 | 910 | -0.34% | 32 | 27.90 | Township |
| Madison township | 54 | 814 | 845 | -0.73% | 36 | 22.93 | Township |
| Perry township | 55 | 681 | 659 | 1.04% | 26 | 25.72 | Township |
| Timberlake | 56 | 601 | 628 | -0.83% | 2,848 | 0.21 | Village |
| Madison township | 57 | 535 | 551 | -0.56% | 22 | 24.43 | Township |
| Madison township | 58 | 489 | 473 | 0.82% | 17 | 28.09 | Township |
| Perry township | 59 | 430 | 448 | -0.69% | 17 | 25.74 | Township |
| Perry township | 60 | 414 | 426 | -0.48% | 17 | 24.36 | Township |
| Grand River | 61 | 391 | 398 | -0.26% | 666 | 0.59 | Village |
| Lakeline | 62 | 207 | 217 | -0.96% | 2,352 | 0.09 | Village |
| Perry township | 63 | 4 | 4 | 0% | 20 | 0.20 | Township |
Mentor is the largest city in Lake County, with a population of 46,599.
Perry township is the smallest city in Lake County.
There are 63 cities in Lake County, Ohio.