he Municipality of Suyo lies in the southern portion of the Province of Ilocos Sur.  It is located at longitudes 120 27’36” to 120 37’10” east and latitudes 16 55’38” to 17 02’12” north.  The Municipality of Sigay bound it in the northeast, in the east and southeast by the Municipality of Tagudin and Northwest by the Municipality of Sta. Lucia.  The Municipality of Suyo is part of what is generally referred as the “interior towns” of Ilocos Sur, lying at the intermediate uplands of the Cordillera Mountain range.

Suyo is about 1 km. from Tagudin, which is the nearest settlement node with a radius of influence covering Sugpon, Alilem, Suyo, Sigay and Cervantes – all the southern interior municipalities that are also within the influence of the Tagudin-Suyo-Cervantes Road.

Suyo’s location allows it to become the critical contact point between sellers of agricultural products from Cervantes and Sigay and the lowland traders and buyers from Tagudin.