Fos-sur-Mer (French pronunciation: [fɔs syʁ mɛʁ], literally Fos on Sea; Provençal: Fòs) is a commune in the Bouches-du-Rhône department in southern France.

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Quick Facts Country, Region ...

Fos-sur-Mer
Commune
Industrial zone
Coat of arms
Location of Fos-sur-Mer
Fos-sur-Mer Show map of France Fos-sur-Mer Show map of Provence-Alpes-Côte d'Azur
Coordinates: 43°26′25″N 4°56′55″E
Country	France
Region	Provence-Alpes-Côte d'Azur
Department	Bouches-du-Rhône
Arrondissement	Istres
Canton	Istres
Intercommunality	Aix-Marseille-Provence
Government
• Mayor (2022–2026)	René Raimondi[1]
Area 1	92.31 km2 (35.64 sq mi)
Population  (2021)[2]	15,469
• Density	170/km2 (430/sq mi)
Time zone	UTC+01:00 (CET)
• Summer (DST)	UTC+02:00 (CEST)
INSEE/Postal code	13039 /13270
Elevation	0–39 m (0–128 ft)
1 French Land Register data, which excludes lakes, ponds, glaciers > 1 km2 (0.386 sq mi or 247 acres) and river estuaries.

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Fos-sur-Mer is situated about 50 km (31 mi) north west of Marseille, on the Mediterranean coast, and to the west of the Étang de Berre. The city has 6 km (3.7 mi) of sand beach.

Fos is the site of a major port development operated by the Autonomous Port of Marseille. The facilities include container handling terminals and a gas (methane) terminal. The waterside location of the industrial zone is attractive to heavy industry including steel.

The steel group ArcelorMittal has its Sollac Méditerranée plant here ( merged into ArcelorMittal in 2006). The presence of the steel, chemistry and oil industries means that pollution levels are high.

Fos-sur-Mer is home to Fos Provence Basket which plays its home games at the 2,000 seat Complexe sportif Parsemain.

• Communes of the Bouches-du-Rhône department