The 11 LGUs

Ilocos Sur's First Congressional District — eleven unique Local Government Units, each with its own heritage, character, and community, all served by DILG Ilocos Sur Sub-Cluster 1.

1 City, 10 Municipalities

296 Barangays

~229,000 Population

Province

Hon. Jeremias "Jerry" C. Singson

Provincial Governor

Heritage Province of Ilocos Sur

Province

Hon. Ryan Luis V. Singson

Vice Governor

Heritage Province of Ilocos Sur

Congressional District

Hon. Ronald V. Singson

Congressional Representative

Ilocos Sur District 1

LGU Profiles

Local Government Units

Learn more about the First District LGUs, their government officials, programs, and tourism highlights.

⭐ CityFeatured

Vigan City

4th Class Independent Component City

City Mayor

Hon. Randolf "Randy" V. Singson

53,879

Population

Barangays

25.12 km²

Area

The provincial capital of Ilocos Sur and a UNESCO World Heritage Site renowned for its preserved Spanish colonial architecture.

Highlights

UNESCO World Heritage Site
Heritage Conservation Hub
Tourism and Cultural Center
Kalesa Rides and Cobblestone Streets
Vigan Longganisa Capital

Tourism

Calle Crisologo, Plaza Burgos, Bantay Church Bell Tower, Vigan Cathedral, Plaza Salcedo, and the Mestizo District.

Contact

Barangay 1, Vigan City, Ilocos Sur

12345678

ASGAEGQG@GMAIL.COM

https://vigancity.gov.ph/

25.12 km² land areaContact Office

1st ClassFeatured

Bantay

1st Class Municipality

Municipal Mayor

Hon. Samuel C. Parilla

44,430

Population

Barangays

55.35 km²

Area

Home to the historic Bantay Bell Tower (Cab-baritan Tower) and Sta. Monica Church.

Highlights

Home of the Historic Bantay Bell Tower
Bantay Church (St. Augustine Parish)
Proximity to Vigan City
Rich Spanish Colonial Heritage
Traditional Ilocano Crafts

Tourism

Bantay Bell Tower, St. Augustine Parish Church, Pinsal Falls nearby, heritage trails.

Contact

https://www.facebook.com/DurasBantayISur/

55.35 km² land area

1st Class

Cabugao

1st Class Municipality

Municipal Mayor

Hon. Josh Edward "Josh" Cobangbang

27,942

Population

Barangays

118.53 km²

Area

A coastal municipality known for the Kapurpurawan-like rock formations and its historic church.

Highlights

Agricultural Hub - Rice and Tobacco
Pristine Coastal Beaches
Salt Production Industry
Traditional Ilocano Weaving (Abel)
Community-Based Livelihood Programs

Tourism

Cabugao Beach, San Juan de Sahagun Parish Church, scenic coastal roads, and local weekend markets.

Contact

https://cabugao.gov.ph/

118.53 km² land area

1st Class

Caoayan

1st Class Municipality

Municipal Mayor

Hon. Germelina S. Goulart

16,659

Population

Barangays

8.2 km²

Area

A small riverside municipality adjacent to Vigan City.

Highlights

Agricultural Community
Proximity to Vigan City
Traditional Farming Practices
Community Development Programs
Solid Waste Management Initiatives

Tourism

Local church heritage, traditional Ilocano architecture, and agricultural tourism opportunities.

Contact

https://www.facebook.com/pages/Municipality-of-Caoayan-Ilocos-Sur/121435121337282

8.2 km² land area

1st Class

Magsingal

1st Class Municipality

Municipal Mayor

Hon. Victoria Ina P. Favis

20,437

Population

Barangays

45.6 km²

Area

Known for hosting the Ilocos Sur Trade Fair Grounds and pottery-making traditions.

Highlights

Magsingal Museum - Cultural Heritage Hub
Traditional Abel Weaving
Pottery and Traditional Crafts
Rice and Tobacco Farming
Cultural Preservation Programs

Tourism

Magsingal Museum, San Ildefonso Parish Church, local craft shops, and Magsingal River.

Contact

https://www.facebook.com/lgumagsingalofficialpage/

45.6 km² land area

2nd Class

San Ildefonso

2nd Class Municipality

Municipal Mayor

Hon. Christian Daniel A. Purisima

10,812

Population

Barangays

15.03 km²

Area

One of the smallest municipalities of the district, known for weaving traditions.

Contact

https://www.facebook.com/LGUsanildefonsoilocossur/

15.03 km² land area

1st Class

San Juan (Lapog)

1st Class Municipality

Municipal Mayor

Hon. Benjamin V. Sarmiento

28,753

Population

Barangays

78.44 km²

Area

Formerly known as Lapog, known for its beaches along the West Philippine Sea.

Contact

https://www.facebook.com/p/LGU-San-Juan-Official-100068833405982/

78.44 km² land area

3rd Class

San Vicente

3rd Class Municipality

Municipal Mayor

Hon. Jonan Tabanda

10,896

Population

Barangays

25.71 km²

Area

A quiet agricultural municipality adjoining Vigan City.

Contact

https://www.sanvicente.gov.ph/

25.71 km² land area

2nd Class

Santa Catalina

2nd Class Municipality

Municipal Mayor

Hon. Municipal Mayor

25,581

Population

Barangays

44.72 km²

Area

Home to the Mindoro Beach and the historic Sta. Catalina de Alejandria Church.

Highlights

Infrastructure Development Programs
Social Services Improvements
Community Empowerment Initiatives

Tourism

Santa Catalina Church, local plazas, traditional markets, and community centers.

Contact

Santa Catalina Municipal Hall, Santa Catalina, Ilocos Sur 2716

(077) 601-7890

santacatalina@dilg.gov.ph

44.72 km² land areaContact Office

1st Class

Santo Domingo

1st Class Municipality

Municipal Mayor

Hon. Annea Cassandra S. De Leon

20,536

Population

Barangays

40.63 km²

Area

A coastal town known for its rich fishing grounds and agricultural production.

Highlights

Active Fishing Industry
Coastal Tourism Development
Fisherfolk Support Programs

Tourism

Santo Domingo Beach, Baroro River, coastal mangroves, and local fishing ports.

Contact

Santo Domingo Municipal Hall, Santo Domingo, Ilocos Sur 2718

(077) 601-8901

santodomingo@dilg.gov.ph

https://www.stodomingo-ilocossur.gov.ph/

40.63 km² land areaContact Office

1st ClassFeatured

Sinait

1st Class Municipality

Municipal Mayor

Hon. Glenn B. Guzman

32,809

Population

Barangays

89.31 km²

Area

Known for the Minor Basilica of Our Lady of Charity, a major pilgrimage site.

Highlights

Shrine of Our Lady of Carmel
Progressive Commercial Hub
Strong Religious Heritage
Vibrant Local Economy
Excellence in Local Governance

Tourism

Shrine of Our Lady of Carmel, Sinait beach, local heritage structures, and weekend markets.

Contact

Sinait, Ilocos Sur

+63927-194-5636

singisingsinait2016@gmail.com

https://sinait.gov.ph/

89.31 km² land areaContact Office

Geographic Coverage

District Map

Explore all 11 city/municipalities and key offices of DILG-IS Sub-Cluster 1. Click any pin for details.