12 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Edina | 1 | 1,014 | 1,002 | 0.2% | 776 | 1 | City |
| Edina | 2 | 1,014 | 1,001 | 0.2% | 776 | 1 | City |
| Knox City | 3 | 187 | 190 | -0.53% | 886 | 0 | City |
| Knox City | 4 | 187 | 190 | -0.53% | 886 | 0 | City |
| Hurdland | 5 | 155 | 155 | 0% | 465 | 0 | City |
| Hurdland | 6 | 155 | 155 | 0% | 465 | 0 | City |
| Baring | 7 | 121 | 121 | 0% | 953 | 0 | City |
| Baring | 8 | 121 | 121 | 0% | 953 | 0 | City |
| Novelty | 9 | 112 | 116 | -0.88% | 400 | 0 | Village |
| Novelty | 10 | 112 | 116 | -0.88% | 400 | 0 | Village |
| Newark | 11 | 59 | 59 | 0% | 183 | 0 | Village |
| Newark | 12 | 59 | 59 | 0% | 183 | 0 | Village |
Edina is the largest city in Knox County, with a population of 1,014.
Newark is the smallest city in Knox County, with a population of 59.
There are 12 cities in Knox County, Missouri.