However, there are also other languages spoken in the region, including:
* Tagalog: The national language of the Philippines, Tagalog is widely spoken in urban areas and is often used in government and education.
* English: English is the second official language of the Philippines and is widely used in business and education.
* Pangasinan: This language is spoken in the neighboring province of Pangasinan and may be understood by some people in Ilocos Norte.
* Other Filipino languages: Depending on the specific municipality or town, there might be other Filipino languages spoken by smaller populations, such as Kapampangan, Bicolano, or Cebuano.
It's important to remember that the prevalence of these languages varies throughout Ilocos Norte. While Ilocano is the dominant language, the use of Tagalog, English, and other languages increases in urban areas and in situations involving government, education, or business.