Barangay Namamparan

Situated in Diadi, Nueva Vizcaya, Barangay Namamparan is one of 19 barangays that make up the municipality within Cagayan Valley.

According to the 2020 Philippine census, Barangay Namamparan had a population of 1,283. This made it the 4th largest of 19 barangays in Diadi by population, placing it in the upper half of the municipality. Residents of Barangay Namamparan accounted for approximately 6.67% of the total population of Diadi, which stood at 19,236 in the same census year.

Census comparisons between 2015 and 2020 show Barangay Namamparan moving from 1,321 residents to 1,283 residents, an intercensal change of -2.9%. The trajectory indicates a contracting community. Barangay Namamparan is officially classified as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Diadi is a municipality comprising 19 barangays, and serves as the governing unit directly responsible for local services in Barangay Namamparan, including public health, sanitation, peace and order, and civil registration. Within the wider province of Nueva Vizcaya, which contains 275 barangays across its component cities and municipalities, Barangay Namamparan ranks 158th by 2020 population. Nueva Vizcaya is classified as a 2nd by the Bureau of Local Government Finance, a category that reflects the province's annual regular income.

The barangay's legislative and executive affairs are handled by a Punong Barangay and the Sangguniang Barangay, elected nationwide during the Barangay and SK Elections. The next BSKE is scheduled for Monday, November 2, 2026, following the synchronized election schedule set by COMELEC Resolution No. 11191.