Seine-Maritime

Seine-Maritime
Prefecture building of the Seine-Maritime department, in Rouen
Location of Seine-Maritime in France
Coordinates: 49°40′N 0°50′E / 49.667°N 0.833°E / 49.667; 0.833
CountryFrance
RegionNormandy
PrefectureRouen
SubprefecturesDieppe
Le Havre
Government
  President of the Departmental CouncilBertrand Bellanger
Area
  Total
6,278 km2 (2,424 sq mi)
Population
 (2022)
  Total
1,260,205
  Rank16th
  Density200/km2 (520/sq mi)
Time zoneUTC+1 (CET)
  Summer (DST)UTC+2 (CEST)
ISO 3166 codeFR-76
Department number76
Arrondissements3
Cantons35
Communes708
^1 French Land Register data, which exclude estuaries, and lakes, ponds, and glaciers larger than 1 km2

Seine-Maritime (French pronunciation: [sɛn maʁitim] ) is a department of France in the Normandy region of northern France. It is situated on the northern coast of France, at the mouth of the Seine, and includes the cities of Rouen and Le Havre. Until 1955 it was named Seine-Inférieure. It had a population of 1,255,633 in 2019.