Barangay Matambog

Barangay Matambog forms part of San Joaquin, a municipality in Iloilo, and is classified as a small barangay.

According to the 2020 Philippine census, Barangay Matambog had a population of 660. This made it the 23rd largest of 85 barangays in San Joaquin by population, placing it in the upper half of the municipality. Residents of Barangay Matambog accounted for approximately 1.25% of the total population of San Joaquin, which stood at 52,617 in the same census year.

The barangay recorded 680 residents in the 2015 intercensal count and 660 residents in the 2020 Census — a net change of -2.9%, consistent with a contracting settlement. Barangay Matambog is officially classified as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

San Joaquin is a municipality comprising 85 barangays, and serves as the governing unit directly responsible for local services in Barangay Matambog, including public health, sanitation, peace and order, and civil registration. Within the wider province of Iloilo, which contains 1,901 barangays across its component cities and municipalities, Barangay Matambog ranks 1104th by 2020 population. Iloilo is classified as a 1st by the Bureau of Local Government Finance, a category that reflects the province's annual regular income.

Like every Philippine barangay, Barangay Matambog is led by an elected Punong Barangay (barangay captain) supported by seven Sangguniang Barangay members (kagawads), an SK Chairperson, a Barangay Secretary, and a Barangay Treasurer. The next Barangay and Sangguniang Kabataan Elections (BSKE) are scheduled for Monday, November 2, 2026, with officials serving four-year terms under Republic Act No. 12232.