| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Cookeville | 1 | 38,769 | 34,972 | 1.46% | 1,076 | 36 | City |
| Monterey | 2 | 2,839 | 2,748 | 0.42% | 938 | 3 | Town |
| Baxter | 3 | 2,245 | 1,580 | 5.5% | 714 | 3 | Town |
Cookeville is the largest city in Putnam County, with a population of 38,769.
Baxter is the smallest city in Putnam County, with a population of 2,245.
There are 3 cities in Putnam County, Tennessee.