8 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Hammond | 1 | 24,411 | 19,700 | 4.01% | 1,712 | 14.26 | City |
| Ponchatoula | 2 | 7,763 | 7,865 | -0.26% | 1,645 | 4.72 | City |
| Natalbany | 3 | 3,096 | 2,847 | 0.23% | 700 | 4.43 | CDP |
| Kentwood | 4 | 2,192 | 2,151 | 0.37% | 308 | 7.11 | Town |
| Independence | 5 | 1,659 | 1,636 | 0.3% | 688 | 2.41 | Town |
| Roseland | 6 | 895 | 884 | 0.22% | 431 | 2.08 | Town |
| Tickfaw | 7 | 686 | 673 | 0.44% | 424 | 1.62 | Village |
| Tangipahoa | 8 | 461 | 426 | 1.54% | 459 | 1 | Village |
Hammond is the largest city in Tangipahoa Parish, with a population of 24,411.
Tangipahoa is the smallest city in Tangipahoa Parish.
There are 8 cities in Tangipahoa Parish, Louisiana.