Plana Baixa
| Plana Baixa | |
|---|---|
| Country | Spain | 
| Autonomous community | Valencian Community | 
| Province | Castellón / Castelló | 
| Capital | Burriana / Borriana | 
| Municipalities | 20 municipalities | 
| Area | |
|  • Total | 605.15 km2 (233.65 sq mi) | 
| Population  (2019) | |
|  • Total | 190,925 | 
| • Density | 320/km2 (820/sq mi) | 
| Time zone | UTC+1 (CET) | 
| • Summer (DST) | UTC+2 (CEST) | 
| Most populated municipality | Villarreal / Vila-real | 
Plana Baixa (Valencian: [ˈplana ˈbajʃa]; Spanish: Plana Baja [ˈplana ˈβaxa]) is a comarca in the province of Castellón, Valencian Community, Spain.
The main source of water for irrigation in the area is the Millars River.