Sint Maarten was a separate municipality until 1990, when it was merged with Harenkarspel. Harenkarspel merged with Schagen in 2013.
In 2001, the village of Sint Maarten had 796 inhabitants. The built-up area of the village was 0.20 km², and contained 315 residences. The statistical area "Sint Maarten", which also can include the peripheral parts of the village, as well as the surrounding countryside, has a population of around 940.