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Castres, Tarn facts for kids

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Houses by the Agout River
Houses by the Agout River
Coat of arms of Castres
Coat of arms
Castres is located in France
Location in France
Castres is located in Occitanie
Location in Occitanie
Country France
Region Occitanie
Department Tarn
Arrondissement Castres
Canton Castres-1, 2 and 3
Intercommunality Castres-Mazamet
98.17 km2 (37.90 sq mi)
 • Density 421.534/km2 (1,091.77/sq mi)
Demonym(s) Castrais
Time zone UTC+01:00 (CET)
 • Summer (DST) UTC+02:00 (CEST)
INSEE/Postal code
81065 /81100
Elevation 151–367 m (495–1,204 ft)
(avg. 170 m or 560 ft)
1 French Land Register data, which excludes lakes, ponds, glaciers > 1 km2 (0.386 sq mi or 247 acres) and river estuaries.

Castres (Occitan: Castras) is a commune in the region of Midi-Pyrénées, in southwestern France. It is the sous-prefecture (capital) of the arrondissement of the same name in the Tarn department.

Castres is (after Toulouse, Tarbes and Albi) the fourth largest industrial centre of the mainly rural Midi-Pyrénées région and the largest in that part of Languedoc between Toulouse and Montpellier.


The name of the town comes from Latin castrum, and means "fortified place".

Castres grew up round the Benedictine abbey of Saint Benoît. Castres became an important stop on the international pilgrimage routes to Santiago de Compostela in Spain because its abbey-church, built in the 9th century, was keeping the relics of Saint Vincent, the renowned martyr of Spain. It was a place of some importance as early as the 12th century, and ranked as the second town of the Albigeois behind Albi.


Castres is in southern France, in the southwestern part of the Tarn department, to the north of the Montagne Noire, a mountain range in central southern France. Castres is crossed from north to south by the Agout river, a tributary of the Tarn.

The commune has an area of 98.17 km2 (37.90 sq mi) and its average altitude is 259 m (850 ft); at the city hall, the altitude is 173 m (568 ft).

Castres is at 42 km (26 mi) southeast of Albi and at 72 km (45 mi) east of Toulouse.

Castres and its neighboring communes
Map of the commune of Castres


The climate of Castres, in the Köppen climate classification, is Cfb - Oceanic climate with template summers.


The inhabitants of Castres are known, in French, as Castrais (women: Castraises).

The city of Castres has a population, in 2014, of 41,382; its population density is of 422 inhabitants/km2.

Evolution of the population in Castres


Castres is a subprefecture of the Tarn department and the capital of the arrondissement of Castres in the same department. It is also the capital of three Cantons:

  1. Castres-1, formed with a part of Castres (16,890 inhabitants) (2014)
  2. Castres-2, formed with a part of Castres and 6 other communes (15,422 inhabitants) (2014)
  3. Castres-3, formed with a part of Castres and the commune Navès (15,319 inhabitants) (2014)

It is part of the intercommunality Castres - Mazamet (French: Communauté d'agglomération de Castres - Mazamet).


Sister cities

Castres is twinned with:


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