Administratively, Mansasa is composed of seven (7) puroks, each of which is monitored and administratively taken cared by a particular barangay kagawad or purok chairman. Below are the puroks or sittios of Mansasa with duly designated Barangay Kagawad in charge as purok chairman, to wit:

As demonstration of participatory governance, the barangay provides for a seat to non-government organizations (NGOs) and people’s organization (POs) in the mandated councils and committees.

The city’s Poverty Reduction, Peace and Development Program (PRPDP) and the Local Poverty Reduction Action Planning (LPRAP) has generated an update on the poverty profile of the barangay based on eight indicators namely: child mortality, child malnutrition, crime, food threshold, housing, income threshold, meals, sanitation, school drop-outs, tenure status, unemployment, and water.

• Feed the Children – Philippines
• World Vision
• Mansasa Elem. School  Parent-Teachers Community Association
• Mansasa Tricycle Operators and Drivers association
• Rural Improvement Club
• Mansasa Senior Citizens Association
• Mansasa Multicab Operators and Drivers Association