The municipality is one of the six that constitute the island of São Miguel. It occupies most of the northern section of the island, from the Atlantic coast to the volcanic mountains in the center of the island. It is the only municipality on São Miguel to share boundaries with all five other municipalities: it is bounded by Nordeste (east), Povoação (southeast), Ponta Delgada (west), Lagoa and Vila Franca do Campo (south). All the municipalities are linked by several regional roads that circle the island or cross the mountains in the central section.