[vinay427]

Switzerland has four official languages (Romansh was added in 1996 and was a "national language" since 1938).

In any case, particularly in Canada and Switzerland the official languages tend to be far more geographically divided than the unofficial languages in those countries, or the many languages in South Africa or much of India, or even Chinese in Singapore, Spanish in the US, etc. It's usually clear which subset of languages, official or otherwise, are useful for the city/region in which you live.