Barangay Bgy. No. 51-A, Nangalisan East

Barangay Bgy. No. 51-A, Nangalisan East forms part of City of Laoag, a city in Ilocos Norte, and is classified as a small barangay.

According to the 2020 Census of Population and Housing conducted by the Philippine Statistics Authority, Barangay Bgy. No. 51-A, Nangalisan East had a population of 1,713. This made it the 17th largest of 80 barangays in City of Laoag by population, placing it in the upper half of the city. Residents of Barangay Bgy. No. 51-A, Nangalisan East accounted for approximately 1.53% of the total population of City of Laoag, which stood at 111,651 in the same census year.

The barangay recorded 1,510 residents in the 2015 intercensal count and 1,713 residents in the 2020 Census — a net change of +13.4%, consistent with a growing settlement. The Philippine Statistics Authority classifies Barangay Bgy. No. 51-A, Nangalisan East as urban, reflecting the density and built-up character of the area.

City of Laoag is a city comprising 80 barangays, and serves as the governing unit directly responsible for local services in Barangay Bgy. No. 51-A, Nangalisan East, including public health, sanitation, peace and order, and civil registration. Within the wider province of Ilocos Norte, which contains 559 barangays across its component cities and municipalities, Barangay Bgy. No. 51-A, Nangalisan East ranks 68th by 2020 population. Ilocos Norte 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 Bgy. No. 51-A, Nangalisan East 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.