Barangay Saimsim

Barangay Saimsim forms part of City of Calamba, a city in Laguna, and is classified as a large barangay.

According to the 2020 Philippine census, Barangay Saimsim had a population of 6,166. This made it the 29th largest of 54 barangays in City of Calamba by population, placing it in the middle tier of the city. Residents of Barangay Saimsim accounted for approximately 1.14% of the total population of City of Calamba, which stood at 539,671 in the same census year.

Census comparisons between 2015 and 2020 show Barangay Saimsim moving from 5,828 residents to 6,166 residents, an intercensal change of +5.8%. The trajectory indicates a growing community. Barangay Saimsim is officially classified as urban, reflecting the density and built-up character of the area.

City of Calamba is a city comprising 54 barangays, and serves as the governing unit directly responsible for local services in Barangay Saimsim, including public health, sanitation, peace and order, and civil registration. Within the wider province of Laguna, which contains 681 barangays across its component cities and municipalities, Barangay Saimsim ranks 140th by 2020 population. Laguna is classified as a 1st by the Bureau of Local Government Finance, a category that reflects the province's annual regular income.

Barangay Saimsim is governed by an elected Sangguniang Barangay composed of a Punong Barangay and seven kagawads, with the Sangguniang Kabataan representing the youth. The next BSKE, set for Monday, November 2, 2026, will elect officials to four-year terms as provided under Republic Act No. 12232.