The species is distributed from the Mahavavy River to the south-west (separating it from P. deckenii) and the Betsiboka River to the north-east (separating it from P. coquereli). Petter et al. (1977) subsequently pointed out that hybridization between P. coronatus and P. deckenii probably occurred along the upper reaches of the Mahavavy River. Collections made in the forests of Ambararatabe (to the west of the Mahavavy River) and sightings along the Bongolava Massif (west of Tsiroanomandidy) also appear to include individuals of P. coronatus. Also, reliable reports of Crowned Sifakas as far south as the Sakay River, as far east as Andanotongo, and south-east beyond Tsiroanomandidy suggest that the distribution of this species is more complicated than originally believed (Tattersall 1986). Sea level to 700 m.