It's important to note that:
* Sambal is actually a group of closely related dialects, with variations found in different areas of Zambales.
* Filipino (Tagalog) is also widely spoken in Zambales, especially in urban areas and as a lingua franca.
* Other languages spoken in the province include Kapampangan, Pangasinan, and Ilocano to a lesser extent.
Therefore, while Sambal is the primary language, there are several other languages and dialects present in Zambales.