Province of Isabela, Cagayan Valley

County Snapshot

Province of Isabela at a glance

Province of Isabela currently has 54 quality-checked populated place pages linked on MapSof, making it easier to jump from the county overview into local city pages.

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Mapped populated places

54

These counts use a stricter populated-place filter so the main lists stay focused on real city and town pages.

Cagayan Valley counties

5

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Largest city

Santiago

Population 108,414

Top linked places

Santiago 108,414 Ilagan 72,363 Naguilian 54,221 San Manuel 52,939

State	Cagayan Valley (Philippines)
Latitude & Longitude	17.0000,122.0000
Time Zone	Asia/Manila
Local time	18:55:20 (23rd April 2026)

Geography

Province of Isabela is located at 17°0'0"N 122°0'0"E (17.0000000, 122.0000000).