Saint Helier (Jèrriais: St Hélyi) is one of the twelve parishes, and the largest town in Jersey, the largest of the Channel Islands in the English Channel. It has a population of about 28,000, and is the capital of the Island (although Government House is situated in St. Saviour).
The parish covers a surface area of 5,738 vergées (10.6 km²; 4.1 sq. mi), being 9% of the total land area of the Island (this includes reclaimed land area of 957 vergées (2 km²; 494 acres).
The parish crest is two crossed gold axes on a blue background, symbolising the martyrdom of Helier and the sea.
It is thought that the site of St. Helier was settled at the time of the Roman control of Gaul.
The medieval hagiographies of Helier, the patron saint martyred in Jersey and after whom the parish and town are named, suggest a picture of a small fishing village on the dunes between the marshy land behind and the high-water mark.