| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Cranberry | 1 | 35,506 | 33,171 | 0.74% | 1,551 | 23 | Township |
| Oil City | 2 | 9,243 | 9,586 | -0.62% | 2,057 | 4 | City |
| Polk | 3 | 7,426 | 7,465 | 0.16% | 241 | 31 | Township |
| Franklin | 4 | 6,661 | 7,063 | 0.12% | 164 | 41 | Township |
| Cranberry | 5 | 6,218 | 6,334 | -0.37% | 89 | 70 | Township |
| Franklin | 6 | 5,864 | 6,067 | -0.59% | 1,254 | 5 | City |
| Franklin | 7 | 5,198 | 5,030 | 0.31% | 271 | 19 | Township |
| Franklin | 8 | 4,799 | 4,670 | 0.38% | 70 | 68 | Township |
| Sugarcreek | 9 | 4,665 | 4,762 | -0.32% | 124 | 38 | Borough |
| Franklin | 10 | 4,464 | 4,436 | -0.07% | 342 | 13 | Township |
| Franklin | 11 | 4,439 | 4,340 | 0.41% | 293 | 15 | Township |
| Franklin | 12 | 3,877 | 3,878 | 0.34% | 219 | 18 | Township |
| Franklin | 13 | 2,605 | 2,593 | 0.12% | 122 | 21 | Township |
| Franklin | 14 | 2,256 | 2,365 | -0.7% | 76 | 30 | Township |
| Cornplanter | 15 | 2,246 | 2,311 | -0.53% | 60 | 37 | Township |
| Franklin | 16 | 2,218 | 2,204 | -0.18% | 80 | 28 | Township |
| Sandycreek | 17 | 2,022 | 2,062 | -0.3% | 114 | 18 | Township |
| Franklin | 18 | 1,770 | 1,711 | 0.23% | 143 | 12 | Township |
| Franklin | 19 | 1,469 | 1,507 | -0.41% | 51 | 29 | Township |
| Frenchcreek | 20 | 1,389 | 1,424 | -0.29% | 48 | 29 | Township |
| Pinegrove | 21 | 1,362 | 1,325 | 1.04% | 37 | 37 | Township |
| Oakland | 22 | 1,331 | 1,359 | -0.3% | 46 | 29 | Township |
| Cherrytree | 23 | 1,275 | 1,304 | -0.08% | 35 | 37 | Township |
| Rockland | 24 | 1,210 | 1,242 | -0.41% | 24 | 50 | Township |
| Canal | 25 | 903 | 931 | -0.44% | 37 | 24 | Township |
| Plum | 26 | 887 | 912 | -0.34% | 33 | 27 | Township |
| Franklin | 27 | 883 | 905 | -0.34% | 37 | 24 | Township |
| Franklin | 28 | 841 | 828 | 0.48% | 36 | 24 | Township |
| Pleasantville | 29 | 814 | 840 | -0.61% | 857 | 1 | Borough |
| Scrubgrass | 30 | 738 | 752 | 0% | 29 | 26 | Township |
| Oil Creek | 31 | 735 | 753 | -0.14% | 32 | 23 | Township |
| Polk | 32 | 618 | 634 | -0.48% | 305 | 2 | Borough |
| Franklin | 33 | 609 | 613 | 0.16% | 18 | 33 | Township |
| Emlenton | 34 | 596 | 616 | -0.67% | 1,024 | 1 | Borough |
| Franklin | 35 | 552 | 545 | 0.36% | 42 | 13 | Township |
| Franklin | 36 | 485 | 497 | 0% | 15 | 31 | Township |
| Mineral | 37 | 481 | 496 | -0.41% | 22 | 22 | Township |
| Rouseville | 38 | 440 | 457 | -0.68% | 493 | 1 | Borough |
| President | 39 | 438 | 449 | -0.23% | 12 | 38 | Township |
| Clintonville | 40 | 427 | 439 | -0.7% | 391 | 1 | Borough |
| Cooperstown | 41 | 381 | 395 | -0.52% | 688 | 1 | Borough |
| Victory | 42 | 372 | 375 | 0% | 18 | 20 | Township |
| Allegheny | 43 | 283 | 285 | 0% | 11 | 25 | Township |
| Polk | 44 | 277 | 284 | 0% | 9.0 | 32 | Township |
| Franklin | 45 | 260 | 274 | -1.14% | 436 | 1 | Borough |
| Pleasantville | 46 | 193 | 194 | 0% | 2,608 | 0 | Borough |
| Utica | 47 | 178 | 184 | -0.56% | 127 | 1 | Borough |
Cranberry is the largest city in Venango County, with a population of 35,506.
Utica is the smallest city in Venango County, with a population of 178.
There are 47 cities in Venango County, Pennsylvania.