Castellón Province, Spain
Castellón province, in the Valencian Community, is home to 627,173 people in 135 municipalities covering 2,561 sq mi. Its capital, Castellón de la Plana, sits at 92 ft (28 m), and its highest point is Penyagolosa, at 5,945 ft (1,812 m).
- Population (2025)
- 627,173
- +7.7% since 2015
- Area
- 2,561 sq mi
- 38th largest of the 50 provinces
- Density
- 245 people/sq mi
- Spain: 251 people/sq mi
- Municipalities
- 135
- 87 with fewer than 1,000 people
- Highest point
- 5,945 ft
- Penyagolosa
Map of Castellón province by municipality
- Capital
- Municipality with an elevation page
- Elevation page (color shows elevation)
- Highest point and peaks
Population and municipalities
With 627,173 people on January 1, 2025, Castellón province ranks 26th by population and 38th by area among Spain’s 50 provinces. Since 2015 it has gained 44,846 people (7.7%). Density is 245 people/sq mi, against a Spanish average of 251 people/sq mi.
The capital, Castellón de la Plana, has 183,711 residents, 29% of the province. Next come Vila-real (53,623), Borriana/Burriana (37,915), and la Vall d'Uixó (32,242).
Of its 135 municipalities (the 28th most of any province), 87 have fewer than 1,000 people. The smallest by population is Castell de Cabres, with 21, and the largest by area is Morella, at 160 sq mi.
| Municipality | Population | Area | Elevation |
|---|---|---|---|
| Castellón de la Plana | 183,711 | 43.0 sq mi | 92 ft |
| Vila-real | 53,623 | 21.3 sq mi | 135 ft |
| Borriana/Burriana | 37,915 | 18.1 sq mi | — |
| la Vall d'Uixó | 32,242 | 25.9 sq mi | — |
| Vinaròs | 30,529 | 36.8 sq mi | — |
| Benicarló | 30,296 | 18.5 sq mi | — |
| Almassora | 29,159 | 12.8 sq mi | — |
| Onda | 26,190 | 41.8 sq mi | — |
| Benicàssim/Benicasim | 20,539 | 14.0 sq mi | — |
| Nules | 14,315 | 19.2 sq mi | — |
Elevation
The capital, Castellón de la Plana, sits 92 ft (28 m) above sea level, the 18th lowest of Spain’s 52 provincial capitals and autonomous cities.
According to the IGN’s summit table, the highest point in Castellón province is Penyagolosa, at 5,945 ft (1,812 m), in the Massís de Penyagolosa. It’s 23 mi from the capital in a straight line and 5,853 ft higher.
Besides the capital, one city over 50,000 people has its own elevation page: Vila-real (135 ft).
- Vila-real 135 ft
- Castellón de la Plana 92 ft
Valencian Community
Castellón is one of the 3 provinces of the Valencian Community, along with Alicante and Valencia. See Valencian Community: its provinces, population and peaks.
Tools and maps
Frequently asked questions
How many municipalities are in Castellón province?
135. That ranks 28th among Spain’s provinces, and 87 of them have fewer than 1,000 people.
What is the population of Castellón province?
627,173, according to the INE’s municipal register on January 1, 2025: the 26th most populous province in Spain.
What is the highest point in Castellón province?
Penyagolosa, at 5,945 ft (1,812 m), according to the IGN’s summit table.
What is the elevation of Castellón de la Plana?
92 ft (28 m) above sea level, according to Spain’s National Geographic Institute (IGN).
What is the largest town in Castellón province after the capital?
Vila-real, with 53,623 people. Next is Borriana/Burriana, with 37,915.
Sources
- Population: our own work with data from the INE website (www.ine.es), municipal register on January 1, 2025 (updated 12/11/2025).
- Area, municipal boundaries, elevations and highest point: Spain’s National Geographic Institute, IGN (CC BY 4.0 ign.es). Simplified boundaries.
- Position of peaks with a page: OpenStreetMap (ODbL).
Reviewed October 31, 2026 · Methodology and sources · Spotted a mistake? Let us know